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Corrosion Resistant Bearings

Corrosion resistant bearings are bearings with a basic structure similar to that of standard bearings, but they are made with special materials and design features to resist corrosion, oxidation, and chemical exposure. They offer better durability in wet, humid, and washdown conditions, reduce the risk of premature surface damage caused by corrosion, and can also combine corrosion resistance with low particle generation or low maintenance for special operating environments.
BKZ Industry is a corrosion resistant bearing manufacturer that uses corrosion-resistant materials such as 440C stainless steel, 316 stainless steel for housings or selected non-raceway components, high-nitrogen stainless steel, full-ceramic components, silicon nitride ceramic balls, zirconia ceramic balls, PEEK cages, PTFE cages, food-grade grease, water-resistant grease, and solid lubricants to produce corrosion resistant bearings, including corrosion resistant pillow block bearing units, corrosion resistant ball bearings, corrosion resistant thrust bearings, and other customized corrosion-resistant bearing products.
With 15+ years of manufacturing experience and ISO 9001 certification, BKZ Industry can manufacture both standard and customized corrosion resistant bearings according to your requirements.

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Corrosion Resistant Bearings Are With Special Bearings

Benefits and Advantages of BKZ Industry Corrosion Resistant Bearings

Corrosion-resistant bearings from BKZ Industry are engineered with special materials and optimized structures to deliver longer service life, lower maintenance, more reliable operation, and better performance in harsh and special working environments, backed by strong engineering capability and extensive manufacturing experience.

Benefits of Corrosion Resistant Bearings

High Resistance to Contamination and Chemical Exposure

Corrosion-resistant bearings are designed to protect critical rolling surfaces from rust, chemical attack, and media ingress. This protection can come from stainless or ceramic materials, protective coatings, sealed structures, corrosion-resistant cages, and compatible lubricants. In mounted units, smooth surfaces and washdown-friendly housing designs also help reduce residue retention and improve resistance to contamination in harsh operating environments.

Longer Service Life in Wet and Chemical Conditions

By reducing corrosion, lubricant deterioration, and surface damage, corrosion-resistant bearings can operate longer in moist, washdown, or chemically exposed environments. Proper material selection, sealing, lubrication, and internal design help limit wear and stress concentration, which supports longer bearing life under demanding conditions.

Reduced Maintenance

Corrosion-resistant bearings can lower maintenance demand by reducing rust formation, grease washout, contamination ingress, and lubrication loss. Sealed designs, corrosion-resistant materials, and self-lubricating or solid-lubricant solutions help extend service intervals and reduce the need for frequent relubrication or replacement.

More Reliable Operation and Better Performance

When corrosion and contamination are better controlled, the bearing can maintain smoother rolling contact, more stable lubrication, and more consistent running conditions. This helps reduce torque increase, vibration, surface roughening, and premature instability, leading to more reliable operation in difficult environments.

Suitable for Different Conditions

Corrosion-resistant bearings are suitable for hygienic production areas, wet and humid environments, washdown systems, saltwater exposure, and chemically aggressive conditions. With the right combination of material, sealing, lubrication, and housing design, they are widely used in food processing, beverage equipment, pharmaceutical machinery, chemical systems, marine equipment, and other applications exposed to moisture or corrosive media.

Why Choose BKZ Industry Corrosion Resistant Bearings

Carefully Selected Materials for Different Corrosive Environments

To improve bearing performance in different corrosive conditions, BKZ Industry offers a range of material options for key components. Ring materials include 440C stainless steel, high-nitrogen stainless steel, 316 stainless steel for selected non-raceway parts, and full-ceramic components. Rolling elements can use stainless steel, silicon nitride ceramic, or zirconia ceramic. Cage options include stainless steel, PEEK, and PTFE. Seal materials include Viton / FKM, PTFE, and other chemical-resistant materials. Lubrication options include food-grade grease, water-resistant grease, and solid lubricant systems.

Experienced Manufacturing and Customization Capability

BKZ Industry has 15+ years of bearing manufacturing experience, with 2 factories and 15 production lines. We provide both standard and customized corrosion resistant bearing solutions, along with OEM services such as custom logos, labels, and packaging.

Strict Quality Control for Corrosion-Resistant Bearings

BKZ Industry uses a range of inspection and testing equipment to control product quality, including chemical composition analyzers, hardness testers, metallographic microscopes, salt spray chambers, corrosion or humidity test chambers, roughness testers, roundness testers, profile and contour measuring instruments, CMM, precision diameter measuring instruments, and internal clearance measuring instruments. These measures help ensure stable material quality, dimensional accuracy, surface condition, and corrosion resistance.

Global Supply Experience with Stable Delivery Capability

BKZ Industry has 15+ years of export experience and has supplied bearings to customers in over 50 countries. We understand international trade requirements and can support export and import documentation. With 15 production lines and 400+ employees, BKZ Industry can maintain stable production capacity and provide on-time delivery.

Engineering Support for Corrosion-Resistant Bearing Applications

BKZ Industry has its own engineering team with experience in corrosion resistant bearing applications. Based on operating environment, load, speed, temperature, lubrication conditions, and exposure media, we can recommend suitable bearing materials, structures, sealing solutions, and lubrication options for different applications.

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Types of Corrosion Resistant Bearings

From bearing structure to material design, corrosion resistant bearings are available in different configurations to meet different operating conditions and application requirements.

Corrosion Resistant Deep Groove Ball Bearings

Corrosion Resistant Deep Groove Ball Bearings

Corrosion resistant deep groove ball bearings use a simple inner ring, outer ring, ball, and cage structure for smooth running and versatile load support. They are commonly made with stainless steel rings, stainless or ceramic balls, polymer or stainless cages, and corrosion-resistant seals. Their main advantages are low friction, compact design, and reliable performance in wet, humid, washdown, and light chemical environments such as food machinery, pumps, conveyors, and general industrial equipment.

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Corrosion Resistant Insert Ball Bearings

Corrosion Resistant Insert Ball Bearings

Corrosion resistant insert ball bearings feature a deep groove ball bearing insert with a spherical outside diameter for easy mounting and self-alignment in housed units. They are typically made with stainless steel inserts, corrosion-resistant locking devices, durable seals, and moisture-resistant grease. Their key benefit is easy replacement and stable operation in contaminated or wet conditions. They are widely used in food processing lines, agricultural equipment, packaging machines, and conveyor systems.

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Corrosion Resistant Pillow Block Bearing Units

Corrosion Resistant Pillow Block Bearing Units

Corrosion resistant pillow block bearing units combine a mounted bearing insert with a pedestal housing for secure shaft support and simple installation. They use stainless steel inserts, stainless or thermoplastic housings, chemical-resistant seals, and water-resistant or food-grade lubricants. Their advantage is strong corrosion protection with convenient mounting and maintenance. They are commonly used in washdown conveyor lines, beverage machinery, marine equipment, and outdoor industrial applications.

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Corrosion Resistant Flange Bearing Units

Corrosion Resistant Flange Bearing Units

Corrosion resistant flange bearing units integrate a corrosion resistant bearing insert with a flange housing for wall or plate mounting where compact side support is needed. Materials include stainless steel bearing inserts, stainless or polymer flanges, corrosion-resistant seals, and application-matched grease. Their main strength is reliable support in confined mounting positions while resisting water, cleaning chemicals, and moisture. They are often used in food equipment, pharmaceutical machinery, compact conveyors, and processing systems.

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Four Point Contact Ball Bearings With Box

Corrosion Resistant Thrust Ball Bearings

Corrosion resistant thrust ball bearings use shaft washers, housing washers, and ball-and-cage assemblies to support axial loads in one or two directions. They are commonly produced with stainless steel race washers, stainless or ceramic balls, and corrosion-resistant cages and lubricants. Their main advantage is stable axial load handling in corrosive or wet conditions where standard thrust bearings may rust quickly. They are suitable for vertical shafts, valve systems, marine devices, pumps, and light axial-load equipment.

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Thin Section Ball Bearings

Full Ceramic and Hybrid Ceramic Bearings

Full ceramic and hybrid ceramic bearings are designed with ceramic rolling elements or fully ceramic rolling components to achieve higher resistance to corrosion, moisture, and many chemical media. Full ceramic bearings use ceramic rings and balls, while hybrid types usually combine stainless steel rings with silicon nitride balls. Their advantages include excellent corrosion resistance, low electrical conductivity, and suitability for clean or chemically aggressive environments. They are widely used in chemical equipment, semiconductor systems, medical devices, pumps, and special precision machinery.

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*Other types not listed here are also available from BKZ Industry. Please contact us for more details.

Corrosion Resistant Bearing Size Chart

Corrosion resistant bearings are often based on standard bearing boundary dimensions, but their materials, sealing structures, lubrication systems, and design details may vary according to the operating environment. Because of this, there is not always one single size chart that covers all corrosion resistant bearing solutions. For specific application requirements, please contact us directly for selection support. Below are some common corrosion resistant bearing sizes and configurations for reference.

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Bearing Number Bearing Type Bore Diameter d (mm) Outside Diameter D (mm) Width B (mm) Overall Width C (mm) Chamfer Dimension r min (mm) Dynamic Load Rating C (N) Static Load Rating C₀ (N) Limiting Speed (Grease) (r/min) Limiting Speed (Oil) (r/min) Weight (kg) Ring Material Rolling Element Material
61800 Corrosion Resistant Deep Groove Ball Bearings 10 19 5 – 0.4 2270 1089 46497 54866 0.002 440C stainless steel 440C stainless steel balls
61801 Corrosion Resistant Deep Groove Ball Bearings 12 21 5 – 0.4 2601 1248 42833 50542 0.002 440C or high-nitrogen stainless steel 440C stainless steel balls / Si3N4 balls
61802 Corrosion Resistant Deep Groove Ball Bearings 15 24 5 – 0.4 3084 1480 38391 45301 0.002 High-nitrogen stainless steel Si3N4 hybrid ceramic balls
61803 Corrosion Resistant Deep Groove Ball Bearings 17 26 5 – 0.4 3166 1519 35952 42423 0.003 440C stainless steel 440C stainless steel balls
61804 Corrosion Resistant Deep Groove Ball Bearings 20 32 7 – 0.6 5446 2614 30323 35781 0.006 440C or high-nitrogen stainless steel 440C stainless steel balls / Si3N4 balls
61805 Corrosion Resistant Deep Groove Ball Bearings 25 37 7 – 0.6 6516 3127 26920 31765 0.007 High-nitrogen stainless steel Si3N4 hybrid ceramic balls
61806 Corrosion Resistant Deep Groove Ball Bearings 30 42 7 – 0.6 7008 3363 24262 28629 0.008 440C stainless steel 440C stainless steel balls
61807 Corrosion Resistant Deep Groove Ball Bearings 35 47 7 – 0.6 8104 3889 22124 26106 0.01 440C or high-nitrogen stainless steel 440C stainless steel balls / Si3N4 balls
61808 Corrosion Resistant Deep Groove Ball Bearings 40 52 7 – 0.6 9251 4440 20364 24029 0.011 High-nitrogen stainless steel Si3N4 hybrid ceramic balls
61809 Corrosion Resistant Deep Groove Ball Bearings 45 58 7 – 0.6 9742 4676 18620 21971 0.013 440C stainless steel 440C stainless steel balls
61810 Corrosion Resistant Deep Groove Ball Bearings 50 65 7 – 0.6 11237 5393 16959 20011 0.017 440C or high-nitrogen stainless steel 440C stainless steel balls / Si3N4 balls
61811 Corrosion Resistant Deep Groove Ball Bearings 55 72 9 – 0.7 16160 7756 15595 18402 0.027 High-nitrogen stainless steel Si3N4 hybrid ceramic balls
61812 Corrosion Resistant Deep Groove Ball Bearings 60 78 10 – 0.8 18240 8755 14604 17232 0.035 440C stainless steel 440C stainless steel balls
61813 Corrosion Resistant Deep Groove Ball Bearings 65 85 10 – 0.8 20466 9823 13610 16059 0.042 440C or high-nitrogen stainless steel 440C stainless steel balls / Si3N4 balls
61814 Corrosion Resistant Deep Groove Ball Bearings 70 90 10 – 0.8 22323 10715 12987 15324 0.045 High-nitrogen stainless steel Si3N4 hybrid ceramic balls
61815 Corrosion Resistant Deep Groove Ball Bearings 75 95 10 – 0.8 22250 10680 12424 14660 0.048 440C stainless steel 440C stainless steel balls
61816 Corrosion Resistant Deep Groove Ball Bearings 80 100 10 – 0.8 24143 11588 11912 14056 0.05 440C or high-nitrogen stainless steel 440C stainless steel balls / Si3N4 balls
61817 Corrosion Resistant Deep Groove Ball Bearings 85 110 13 – 1 34969 16785 11016 12998 0.089 High-nitrogen stainless steel Si3N4 hybrid ceramic balls
61818 Corrosion Resistant Deep Groove Ball Bearings 90 115 13 – 1 34510 16564 10622 12533 0.093 440C stainless steel 440C stainless steel balls
61819 Corrosion Resistant Deep Groove Ball Bearings 95 120 13 – 1 37110 17812 10258 12104 0.098 440C or high-nitrogen stainless steel 440C stainless steel balls / Si3N4 balls
61820 Corrosion Resistant Deep Groove Ball Bearings 100 125 13 – 1 39803 19105 9920 11705 0.102 High-nitrogen stainless steel Si3N4 hybrid ceramic balls
61900 Corrosion Resistant Deep Groove Ball Bearings 10 22 6 – 0.5 3084 1480 41230 48651 0.003 440C stainless steel 440C stainless steel balls
61901 Corrosion Resistant Deep Groove Ball Bearings 12 24 6 – 0.5 3485 1672 38391 45301 0.004 440C or high-nitrogen stainless steel 440C stainless steel balls / Si3N4 balls
61902 Corrosion Resistant Deep Groove Ball Bearings 15 28 7 – 0.6 4856 2330 33832 39921 0.005 High-nitrogen stainless steel Si3N4 hybrid ceramic balls
61903 Corrosion Resistant Deep Groove Ball Bearings 17 30 7 – 0.6 4926 2364 31971 37725 0.006 440C stainless steel 440C stainless steel balls
61904 Corrosion Resistant Deep Groove Ball Bearings 20 37 9 – 0.7 7916 3799 26920 31765 0.012 440C or high-nitrogen stainless steel 440C stainless steel balls / Si3N4 balls
61905 Corrosion Resistant Deep Groove Ball Bearings 25 42 9 – 0.7 9291 4459 24262 28629 0.014 High-nitrogen stainless steel Si3N4 hybrid ceramic balls
61906 Corrosion Resistant Deep Groove Ball Bearings 30 47 9 – 0.7 9846 4726 22124 26106 0.016 440C stainless steel 440C stainless steel balls
61907 Corrosion Resistant Deep Groove Ball Bearings 35 55 10 – 0.8 13111 6293 19449 22949 0.025 440C or high-nitrogen stainless steel 440C stainless steel balls / Si3N4 balls
61908 Corrosion Resistant Deep Groove Ball Bearings 40 62 12 – 1 18113 8694 17629 20802 0.038 High-nitrogen stainless steel Si3N4 hybrid ceramic balls
61909 Corrosion Resistant Deep Groove Ball Bearings 45 68 12 – 1 18762 9005 16343 19284 0.044 440C stainless steel 440C stainless steel balls
61910 Corrosion Resistant Deep Groove Ball Bearings 50 72 12 – 1 20505 9842 15595 18402 0.045 440C or high-nitrogen stainless steel 440C stainless steel balls / Si3N4 balls
61911 Corrosion Resistant Deep Groove Ball Bearings 55 80 13 – 1 25302 12144 14304 16878 0.061 High-nitrogen stainless steel Si3N4 hybrid ceramic balls
61912 Corrosion Resistant Deep Groove Ball Bearings 60 85 13 – 1 25390 12187 13610 16059 0.066 440C stainless steel 440C stainless steel balls
61913 Corrosion Resistant Deep Groove Ball Bearings 65 90 13 – 1 27717 13304 12987 15324 0.071 440C or high-nitrogen stainless steel 440C stainless steel balls / Si3N4 balls
61914 Corrosion Resistant Deep Groove Ball Bearings 70 100 16 – 1.3 38647 18550 11912 14056 0.114 High-nitrogen stainless steel Si3N4 hybrid ceramic balls
61915 Corrosion Resistant Deep Groove Ball Bearings 75 105 16 – 1.3 38310 18388 11445 13505 0.121 440C stainless steel 440C stainless steel balls
61916 Corrosion Resistant Deep Groove Ball Bearings 80 110 16 – 1.3 41364 19854 11016 12998 0.128 440C or high-nitrogen stainless steel 440C stainless steel balls / Si3N4 balls
61917 Corrosion Resistant Deep Groove Ball Bearings 85 120 18 – 1.4 51993 24956 10258 12104 0.181 High-nitrogen stainless steel Si3N4 hybrid ceramic balls
61918 Corrosion Resistant Deep Groove Ball Bearings 90 125 18 – 1.4 51120 24537 9920 11705 0.19 440C stainless steel 440C stainless steel balls
61919 Corrosion Resistant Deep Groove Ball Bearings 95 130 18 – 1.4 54785 26296 9606 11335 0.198 440C or high-nitrogen stainless steel 440C stainless steel balls / Si3N4 balls
61920 Corrosion Resistant Deep Groove Ball Bearings 100 140 20 – 1.6 67204 32257 9040 10667 0.269 High-nitrogen stainless steel Si3N4 hybrid ceramic balls
6000 Corrosion Resistant Deep Groove Ball Bearings 10 26 8 – 0.6 4756 2282 35952 42423 0.006 440C stainless steel 440C stainless steel balls
6001 Corrosion Resistant Deep Groove Ball Bearings 12 28 8 – 0.6 5298 2543 33832 39921 0.007 440C or high-nitrogen stainless steel 440C stainless steel balls / Si3N4 balls
6002 Corrosion Resistant Deep Groove Ball Bearings 15 32 9 – 0.7 7002 3360 30323 35781 0.01 High-nitrogen stainless steel Si3N4 hybrid ceramic balls
6003 Corrosion Resistant Deep Groove Ball Bearings 17 35 10 – 0.8 8006 3842 28175 33246 0.013 440C stainless steel 440C stainless steel balls
6004 Corrosion Resistant Deep Groove Ball Bearings 20 42 12 – 1 11791 5659 24262 28629 0.023 440C or high-nitrogen stainless steel 440C stainless steel balls / Si3N4 balls
6005 Corrosion Resistant Deep Groove Ball Bearings 25 47 12 – 1 13629 6541 22124 26106 0.027 High-nitrogen stainless steel Si3N4 hybrid ceramic balls
6006 Corrosion Resistant Deep Groove Ball Bearings 30 55 13 – 1 16270 7809 19449 22949 0.039 440C stainless steel 440C stainless steel balls
6007 Corrosion Resistant Deep Groove Ball Bearings 35 62 14 – 1.1 20317 9752 17629 20802 0.051 440C or high-nitrogen stainless steel 440C stainless steel balls / Si3N4 balls
6008 Corrosion Resistant Deep Groove Ball Bearings 40 68 15 – 1.2 24549 11783 16343 19284 0.064 High-nitrogen stainless steel Si3N4 hybrid ceramic balls
6009 Corrosion Resistant Deep Groove Ball Bearings 45 75 16 – 1.3 27210 13060 15081 17795 0.081 440C stainless steel 440C stainless steel balls
6010 Corrosion Resistant Deep Groove Ball Bearings 50 80 16 – 1.3 29931 14366 14304 16878 0.087 440C or high-nitrogen stainless steel 440C stainless steel balls / Si3N4 balls
6011 Corrosion Resistant Deep Groove Ball Bearings 55 90 18 – 1.4 38827 18636 12987 15324 0.128 High-nitrogen stainless steel Si3N4 hybrid ceramic balls
6012 Corrosion Resistant Deep Groove Ball Bearings 60 95 18 – 1.4 38700 18576 12424 14660 0.137 440C stainless steel 440C stainless steel balls
6013 Corrosion Resistant Deep Groove Ball Bearings 65 100 18 – 1.4 41993 20156 11912 14056 0.146 440C or high-nitrogen stainless steel 440C stainless steel balls / Si3N4 balls
6014 Corrosion Resistant Deep Groove Ball Bearings 70 110 20 – 1.6 52639 25266 11016 12998 0.202 High-nitrogen stainless steel Si3N4 hybrid ceramic balls
6015 Corrosion Resistant Deep Groove Ball Bearings 75 115 20 – 1.6 51950 24936 10622 12533 0.213 440C stainless steel 440C stainless steel balls
6016 Corrosion Resistant Deep Groove Ball Bearings 80 125 22 – 1.8 63798 30623 9920 11705 0.284 440C or high-nitrogen stainless steel 440C stainless steel balls / Si3N4 balls
6017 Corrosion Resistant Deep Groove Ball Bearings 85 130 22 – 1.8 68317 32792 9606 11335 0.298 High-nitrogen stainless steel Si3N4 hybrid ceramic balls
6018 Corrosion Resistant Deep Groove Ball Bearings 90 140 24 – 1.9 75540 36259 9040 10667 0.386 440C stainless steel 440C stainless steel balls
6019 Corrosion Resistant Deep Groove Ball Bearings 95 145 24 – 1.9 80618 38696 8783 10363 0.403 440C or high-nitrogen stainless steel 440C stainless steel balls / Si3N4 balls
6020 Corrosion Resistant Deep Groove Ball Bearings 100 150 24 – 1.9 85860 41212 8542 10079 0.42 High-nitrogen stainless steel Si3N4 hybrid ceramic balls
UC201 Corrosion Resistant Insert Ball Bearings 12 47 17 31 1 14810 8293 13786 – 0.102 440C or high-nitrogen stainless steel insert ring 440C stainless steel balls
UC202 Corrosion Resistant Insert Ball Bearings 15 47 17 31 1 15167 8493 13786 – 0.098 440C stainless steel insert ring 440C stainless steel balls / Si3N4 balls
UC203 Corrosion Resistant Insert Ball Bearings 17 47 17 31 1 15506 8683 13786 – 0.095 440C stainless steel insert ring 440C stainless steel balls
UC204 Corrosion Resistant Insert Ball Bearings 20 47 17 31 1 15868 8886 13786 – 0.09 440C or high-nitrogen stainless steel insert ring 440C stainless steel balls / Si3N4 balls
UC205 Corrosion Resistant Insert Ball Bearings 25 52 17 34.1 1 18232 10209 12715 – 0.113 440C stainless steel insert ring 440C stainless steel balls
UC206 Corrosion Resistant Insert Ball Bearings 30 62 19 38.1 1.1 24706 13835 11046 – 0.179 440C stainless steel insert ring 440C stainless steel balls / Si3N4 balls
UC207 Corrosion Resistant Insert Ball Bearings 35 72 20 42.9 1.2 32851 18396 9800 – 0.272 440C or high-nitrogen stainless steel insert ring 440C stainless steel balls
UC208 Corrosion Resistant Insert Ball Bearings 40 80 21 49.2 1.3 42569 23838 9008 – 0.378 440C stainless steel insert ring 440C stainless steel balls / Si3N4 balls
UC209 Corrosion Resistant Insert Ball Bearings 45 85 22 49.2 1.3 42720 23923 8581 – 0.409 440C stainless steel insert ring 440C stainless steel balls
UC210 Corrosion Resistant Insert Ball Bearings 50 90 23 51.6 1.4 48388 27097 8198 – 0.462 440C or high-nitrogen stainless steel insert ring 440C stainless steel balls / Si3N4 balls
UC211 Corrosion Resistant Insert Ball Bearings 55 100 25 55.6 1.5 58968 33022 7535 – 0.62 440C stainless steel insert ring 440C stainless steel balls
UC212 Corrosion Resistant Insert Ball Bearings 60 110 27 65.1 1.6 77178 43219 6982 – 0.885 440C stainless steel insert ring 440C stainless steel balls / Si3N4 balls
UC213 Corrosion Resistant Insert Ball Bearings 65 120 28 65.1 1.7 79419 44474 6512 – 1.06 440C or high-nitrogen stainless steel insert ring 440C stainless steel balls
UC214 Corrosion Resistant Insert Ball Bearings 70 125 31 74.6 1.9 96543 54064 6303 – 1.28 440C stainless steel insert ring 440C stainless steel balls / Si3N4 balls
UC215 Corrosion Resistant Insert Ball Bearings 75 130 34 77.8 2 106745 59777 6108 – 1.404 440C stainless steel insert ring 440C stainless steel balls
UC216 Corrosion Resistant Insert Ball Bearings 80 140 36 82.6 2 124274 69593 5757 – 1.745 440C or high-nitrogen stainless steel insert ring 440C stainless steel balls / Si3N4 balls
UC217 Corrosion Resistant Insert Ball Bearings 85 150 38 85.7 2 130250 72940 5448 – 2.095 440C stainless steel insert ring 440C stainless steel balls
UC218 Corrosion Resistant Insert Ball Bearings 90 160 40 96 2 158508 88764 5173 – 2.688 440C stainless steel insert ring 440C stainless steel balls / Si3N4 balls
UC305 Corrosion Resistant Insert Ball Bearings 25 62 20 38.1 1.2 25086 14048 11046 – 0.196 440C or high-nitrogen stainless steel insert ring 440C stainless steel balls
UC306 Corrosion Resistant Insert Ball Bearings 30 72 23 43.7 1.4 33987 19032 9800 – 0.3 440C stainless steel insert ring 440C stainless steel balls / Si3N4 balls
UC307 Corrosion Resistant Insert Ball Bearings 35 80 25 48 1.5 39100 21896 9008 – 0.397 440C stainless steel insert ring 440C stainless steel balls
UC308 Corrosion Resistant Insert Ball Bearings 40 90 27 51.6 1.6 48184 26983 8198 – 0.537 440C or high-nitrogen stainless steel insert ring 440C stainless steel balls / Si3N4 balls
UCP201 Corrosion Resistant Pillow Block Bearing Units 12 47 31 127 1.9 14105 8039 11911 – 0.75 440C stainless steel insert ring + stainless/thermoplastic housing 440C stainless steel balls / Si3N4 balls
UCP202 Corrosion Resistant Pillow Block Bearing Units 15 47 31 127 1.9 14454 8238 11911 – 0.746 High-nitrogen stainless insert + polymer/stainless housing 440C stainless steel balls
UCP203 Corrosion Resistant Pillow Block Bearing Units 17 47 31 127 1.9 14784 8426 11911 – 0.742 440C stainless steel insert ring + stainless/thermoplastic housing 440C stainless steel balls
UCP204 Corrosion Resistant Pillow Block Bearing Units 20 47 31 127 1.9 15138 8628 11911 – 0.736 High-nitrogen stainless insert + polymer/stainless housing 440C stainless steel balls / Si3N4 balls
UCP205 Corrosion Resistant Pillow Block Bearing Units 25 52 34.1 140 2 17395 9915 11008 – 0.828 440C stainless steel insert ring + stainless/thermoplastic housing 440C stainless steel balls
UCP206 Corrosion Resistant Pillow Block Bearing Units 30 62 38.1 165 2 23562 13430 9597 – 1.027 High-nitrogen stainless insert + polymer/stainless housing 440C stainless steel balls
UCP207 Corrosion Resistant Pillow Block Bearing Units 35 72 42.9 167 2 31318 17851 8540 – 1.141 440C stainless steel insert ring + stainless/thermoplastic housing 440C stainless steel balls / Si3N4 balls
UCP208 Corrosion Resistant Pillow Block Bearing Units 40 80 49.2 184 2 40568 23123 7866 – 1.345 High-nitrogen stainless insert + polymer/stainless housing 440C stainless steel balls
UCP209 Corrosion Resistant Pillow Block Bearing Units 45 85 49.2 190 2 40719 23209 7503 – 1.411 440C stainless steel insert ring + stainless/thermoplastic housing 440C stainless steel balls
UCP210 Corrosion Resistant Pillow Block Bearing Units 50 90 51.6 206 2 46122 26289 7176 – 1.55 High-nitrogen stainless insert + polymer/stainless housing 440C stainless steel balls / Si3N4 balls
UCP211 Corrosion Resistant Pillow Block Bearing Units 55 100 55.6 219 2 56191 32028 6610 – 1.793 440C stainless steel insert ring + stainless/thermoplastic housing 440C stainless steel balls
UCP212 Corrosion Resistant Pillow Block Bearing Units 60 110 65.1 241 2 73510 41900 6136 – 2.201 High-nitrogen stainless insert + polymer/stainless housing 440C stainless steel balls
UCP213 Corrosion Resistant Pillow Block Bearing Units 65 120 65.1 265 2 75643 43116 5733 – 2.517 440C stainless steel insert ring + stainless/thermoplastic housing 440C stainless steel balls / Si3N4 balls
UCP214 Corrosion Resistant Pillow Block Bearing Units 70 125 74.6 266 2 91930 52400 5554 – 2.77 High-nitrogen stainless insert + polymer/stainless housing 440C stainless steel balls
UCP215 Corrosion Resistant Pillow Block Bearing Units 75 130 77.8 275 2 101642 57935 5386 – 2.954 440C stainless steel insert ring + stainless/thermoplastic housing 440C stainless steel balls
UCP216 Corrosion Resistant Pillow Block Bearing Units 80 140 82.6 292 2 118315 67439 5084 – 3.423 High-nitrogen stainless insert + polymer/stainless housing 440C stainless steel balls / Si3N4 balls
UCP217 Corrosion Resistant Pillow Block Bearing Units 85 150 85.7 310 2 123992 70675 4817 – 3.906 440C stainless steel insert ring + stainless/thermoplastic housing 440C stainless steel balls
UCP218 Corrosion Resistant Pillow Block Bearing Units 90 160 96 327 2 150858 85989 4581 – 4.659 High-nitrogen stainless insert + polymer/stainless housing 440C stainless steel balls
UCP305 Corrosion Resistant Pillow Block Bearing Units 25 62 38.1 175 2 23910 13628 9597 – 1.096 440C stainless steel insert ring + stainless/thermoplastic housing 440C stainless steel balls / Si3N4 balls
UCP306 Corrosion Resistant Pillow Block Bearing Units 30 72 43.7 200 2 32383 18458 8540 – 1.337 High-nitrogen stainless insert + polymer/stainless housing 440C stainless steel balls
UCP307 Corrosion Resistant Pillow Block Bearing Units 35 80 48 210 2 37250 21232 7866 – 1.497 440C stainless steel insert ring + stainless/thermoplastic housing 440C stainless steel balls
UCP308 Corrosion Resistant Pillow Block Bearing Units 40 90 51.6 220 2 45897 26161 7176 – 1.704 High-nitrogen stainless insert + polymer/stainless housing 440C stainless steel balls / Si3N4 balls

Industries and Equipment That Use Corrosion-Resistant Bearings

They are widely used in industries where bearings must operate reliably under water exposure, chemical contact, frequent washdown, high humidity, or salt-laden conditions.

FAQs About Corrosion-Resistant Bearings

Q1. Are Corrosion-Resistant Bearings the Same as Stainless Steel Bearings?

No. Stainless steel bearings are only one type of corrosion-resistant bearing. Corrosion-resistant bearings are a broader category that can include stainless steel bearings, hybrid ceramic bearings, full ceramic bearings, coated bearings, polymer bearings, and bearings that use special seals or lubrication systems to operate in corrosive environments.

316 is better for saltwater corrosion resistance. The main reason is material chemistry. 316 stainless steel has stronger resistance to chloride-containing media, brine, and many chemicals, while 440C is a martensitic stainless steel mainly chosen because it offers higher hardness and better rolling-contact performance.

Generally, yes. Corrosion-resistant bearings usually cost more than standard bearings because they often use more expensive materials and may also require special seals, coatings, lubricants, or additional manufacturing processes. The higher cost comes not only from the use of more expensive materials such as stainless steel, high-nitrogen stainless steel, and ceramic components, but also from additional design and production requirements such as protective sealing, chemically compatible lubricants, special coatings, and stainless steel or thermoplastic housings.

Often yes. If the corrosion-resistant bearing has the same boundary dimensions, fits, and relevant internal design, it can often replace a standard bearing without changing the housing or shaft. However, load rating, speed capability, clearance, sealing design, and lubrication should still be checked before replacement.

Often yes, but not in every case. Ceramic balls usually provide better corrosion resistance than steel balls, and in some applications they can also offer electrical insulation and lower frictional heat. The main reason is that ceramic rolling elements are far more chemically stable than steel in harsh media. However, the overall bearing performance still depends on the rings, cage, seals, lubricant, load, and operating conditions.

Yes. Roller bearings are available in corrosion-resistant designs, although they are generally less common than corrosion-resistant deep groove ball bearings, insert units, or mounted units. Depending on the application, corrosion resistance can be achieved through special materials, coatings, seals, and lubrication systems.

Yes. Custom corrosion-resistant bearings are widely available when the application requires specific materials, sealing solutions, lubrication systems, housing designs, or dimensional configurations. BKZ Industry can provide customized corrosion-resistant bearing solutions according to different operating environments and application requirements. Please contact us to discuss customization options.

The key difference is the main failure mode being addressed. Corrosion-resistant bearings are designed to resist rust, oxidation, chemical attack, and surface damage in corrosive environments. Waterproof bearings mainly focus on sealing performance to keep water out and retain lubricant. In practice, a bearing can be waterproof without having strong corrosion resistance, and a corrosion-resistant bearing may still require effective sealing to perform well in wet conditions.

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More Bearing Solutions from BKZ Industry

In addition to corrosion-resistant bearings, BKZ Industry also supplies a wide range of bearing solutions for different industrial applications.

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