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Mounted Ball Bearing Units

Mounted ball bearing units produced by BKZ Industry consist of an insert bearing installed into a housing with sealing components. It is a special type of deep groove ball bearing assembly. They are usually applied in side-wall installations and in locations where installation is not convenient.
They feature a simple structure, easy installation, and automatic self-alignment capability, which makes them widely and popularly used in various industrial applications.

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Ball Bearing Units: Functions and Advantages

Mounted ball bearing units are easier to install, provide better sealing protection, reduce maintenance cost, and help improve service life in many industrial applications.

Structure and Functions

Structure

Ball bearing units consist of an insert bearing, housing, sealing system, and lubrication system.

Load Carrying

They mainly carry radial loads and light to moderate axial loads.

Self-Alignment

The spherical outer surface of the insert bearing allows limited self-alignment to compensate for minor shaft misalignment.

Shaft Locking and Bearing Support

The housing supports the bearing, while locking mechanisms secure it to the shaft. The housing and sealing system protect it from contamination and external damage.

Advantages

Easier Installation

Mounted design simplifies installation and reduces assembly time.

Cost Effective Solution

Lower machining requirements and easier replacement reduce overall maintenance cost.

Better Sealing

Integrated seals improve performance in dusty or humid environments.

Improved Reliability and Stability

The integrated housing and lubrication system improves operational reliability and overall system stability.

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Types of Ball Bearing Units

BKZ offers a complete range of mounted ball bearing units. Based on housing design and installation method, they are classified into pillow block units, flanged units, and take-up units, each suitable for different mounting and load conditions.

Pillow Block Units

Pillow Block Units - UCP Series

Pillow block units feature a base-mounted housing designed for horizontal installation, providing stable radial load support and easy maintenance in general industrial machinery.

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Flanged Units

Flanged Units - UCF/UCFC/UCFS Series

Flanged units utilize various flange housing designs for vertical or side-wall mounting, ensuring precise shaft positioning and compact structural support in space-constrained applications.

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Take Up Units

Take-up Units - UCT Series

Take-up units incorporate a sliding housing design that allows shaft position adjustment for belt tension control, commonly used in conveyor systems and transmission equipment.

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*We also offer bearings not listed here . Contact us for more options.

Mounted Ball Bearing Unit Size Chart

To select the appropriate mounted ball bearing unit, please refer to the size chart below for detailed dimensional specifications. If the required model is not listed, or if you need a customized solution, please contact our team with your shaft size and application details. We will provide a suitable recommendation promptly.

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Download PDF Size Chart >

Series Bearing No. Insert Type Housing Type Bore B (mm) Length L (mm) Mounting Distance J (mm) Center Height H (mm) Base Height H0 (mm) Total Height H1 (mm) Sliding Length L1 (mm) Sliding Slot Length L2 (mm) Flange Width f (mm) Centering Boss Diameter D1 (mm) Flange Bolt Pitch P (mm) Base Width A (mm) Bolt Hole Spacing A1 (mm) Bolt Hole Spacing A2 (mm) Bolt Hole Spacing A3 (mm) Bolt Hole Dia. j (mm) Centering Depth K (mm) Mounting Hole Diameter N (mm) Secondary Mounting Hole Diameter N1 (mm) Secondary Mounting Hole Diameter N2 (mm) Bolt Thread De Weight (kg)
UCFS300 Series UCFS131 UC311 FS311 66 185 140 150 39 13 17 20 23 M20 6.2
UCF200 Series UCF201 UCF201 F201 27.4 76 54 25.5 11 15 12 M10 0.7
UCFC200 Series UCFC201 UC201 FC201 27.4 97 53 58 75 19 9 4 6 12 M10 0.6
UCP200 Series UCP201 UCP201 P201 27.4 125 96 30.2 57 14 36 13 19 M10 0.6
UCT200 Series UCT201 UC201 T201 27.4 94 89 76 61 10 32 12 21 19 16 32 0.79
UCF200 Series UCF202 UCF202 F202 27.4 76 54 25.5 11 15 12 M10 0.6
UCFC200 Series UCFC202 UC202 FC202 27.4 97 53 58 75 19 9 4 6 12 M10 0.6
UCP200 Series UCP202 UCP202 P202 27.4 125 96 30.2 57 14 36 13 19 M10 0.6
UCT200 Series UCT202 UC202 T202 27.4 94 89 76 61 10 32 12 21 19 16 32 0.78
UCF200 Series UCF203 UCF203 F203 27.4 76 54 25.5 11 15 12 M10 0.6
UCFC200 Series UCFC203 UC203 FC203 27.4 97 53 58 75 19 9 4 6 12 M10 0.6
UCP200 Series UCP203 UCP203 P203 27.4 125 96 30.2 57 14 36 13 19 M10 0.6
UCT200 Series UCT203 UC203 T203 27.4 94 89 76 61 10 32 12 21 19 16 32 0.77
UCF200 Series UCF204 UCF204 F204 31 86 63.5 25.5 11 15 12 M10 0.7
UCFC200 Series UCFC204 UC204 FC204 31 100 55.1 62 78 20.5 10 5 7 12 M10 0.7
UCP200 Series UCP204 UCP204 P204 31 127 96 33.3 65 14 38 13 19 M10 0.7
UCT200 Series UCT204 UC204 T204 31 94 89 76 61 10 32 12 21 19 16 32 0.81
UCF200 Series UCF205 UCF205 F205 34.1 95 70 27 13 16 12 M10 0.9
UCFC200 Series UCFC205 UC205 FC205 34.1 115 63.6 70 90 21 10 6 7 12 ML0 1
UCP200 Series UCP205 UCP205 P205 34.1 140 105 36.5 71 15 38 13 19 M10 0.8
UCT200 Series UCT205 UC205 T205 34.1 97 89 76 62 10 32 12 24 19 16 37 0.92
UCF200 Series UCF206 UCF206 F206 38.1 108 82.5 31 13 18 12 M10 1.07
UCFC200 Series UCFC206 UC206 FC206 38.1 125 70.7 80 100 23 10 8 8 12 M10 1.3
UCP200 Series UCP206 UCP206 P206 38.1 165 121 42.9 83 17 48 17 23 M14 1.3
UCT200 Series UCT206 UC206 T206 38.1 113 102 89 70 10 32 12 28 22 16 37 1.01
UCF200 Series UCF207 UCF207 F207 42.9 117 92 34 15 19 14 M12 1.4
UCFC200 Series UCFC207 UC207 FC207 42.9 135 77.8 90 110 26 11 8 9 14 M12 1.6
UCP200 Series UCP207 UCP207 P207 42.9 167 127 47.6 93 18 48 17 23 M14 1.6
UCT200 Series UCT207 UC207 T207 42.9 129 102 89 78 13 37 12 30 22 16 49 1.7
UCF200 Series UCF208 UCF208 F208 49.2 130 102 36 15 21 16 M14 1.8
UCFC200 Series UCFC208 UC208 FC208 49.2 145 84.8 100 120 26 11 10 9 14 M12 2.1
UCP200 Series UCP208 UCP208 P208 49.2 184 137 49.2 100 18 54 17 23 M14 1.9
UCT200 Series UCT208 UC208 T208 49.2 144 114 102 88 16 49 16 33 29 19 49 2.43
UCF200 Series UCF209 UCF209 F209 49.2 137 105 38 16 22 16 M14 2.2
UCFC200 Series UCFC209 UC209 FC209 49.2 160 93.3 105 132 26 10 12 14 16 M14 2.7
UCP200 Series UCP209 UCP209 P209 49.2 190 146 54 106 20 54 17 23 M14 2.2
UCT200 Series UCT209 UC209 T209 49.2 144 117 102 87 16 49 16 35 29 19 49 2.58
UCF200 Series UCF210 UCF210 F210 51.6 143 111 40 16 22 19 M16 2.4
UCFC200 Series UCFC210 UC210 FC210 51.6 165 97.6 110 138 28 10 12 14 16 M14 3.1
UCP200 Series UCP210 UCP210 P210 51.6 206 159 57.2 114 21 60 20 26 M16 2.6
UCT200 Series UCT210 UC210 T210 516 149 117 102 90 16 49 16 37 29 19 64 2.78
UCF200 Series UCF211 UCF211 F211 55.6 162 130 43 18 25 19 M16 3.5
UCFC200 Series UCFC211 UC211 FC211 55.6 185 106.1 125 150 31 13 12 15 19 M16 4.2
UCP200 Series UCP211 UCP211 P211 55.6 219 171 63.5 126 23 60 20 26 M16 3.3
UCT200 Series UCT211 UC211 T211 55.6 171 146 130 106 19 64 22 38 35 25 64 3.82
UCF200 Series UCF212 UCF212 F212 65.1 175 143 48 18 29 19 M16 4.2
UCFC200 Series UCFC212 UC212 FC212 65.1 195 113.1 135 160 36 17 12 15 19 M16 5.3
UCP200 Series UCP212 UCP212 P212 65.1 241 184 69.8 138 25 70 20 26 M16 4.6
UCT200 Series UCT212 UC212 T212 65.1 194 146 151 119 19 64 22 42 35 32 70 4.9
UCF200 Series UCF213 UCF213 F213 65.1 187 150 50 21 30 19 M16 5.3
UCFC200 Series UCFC213 UC213 FC213 65.1 205 120.2 145 170 36 17 14 15 19 M16 6
UCP200 Series UCP213 UCP213 P213 65.1 265 203 76.2 151 27 70 25 31 M20 5.9
UCT200 Series UCT213 UC213 T213 65.1 224 167 151 137 21 70 26 44 41 32 70 7.3
UCF200 Series UCF214 UCF214 F214 74.6 193 152 54 22 31 19 M16 5.9
UCFC200 Series UCFC214 UC214 FC214 74.6 215 125.1 150 177 40 17 14 18 19 M16 7
UCP200 Series UCP214 UCP214 P214 74.6 266 210 79.4 157 27 72 25 31 M20 6.6
UCT200 Series UCT214 UC214 T214 74.6 224 167 151 137 21 70 26 46 41 32 70 7.36
UCF200 Series UCF215 UCF215 F215 77.8 200 159 56 22 34 19 M16 6.3
UCFC200 Series UCFC215 UC215 FC215 77.8 220 130.1 160 184 40 18 16 18 19 M16 7.8
UCP200 Series UCP215 UCP215 P215 77.8 275 217 82.6 163 28 74 25 31 M20 7.4
UCT200 Series UCT215 UC215 T215 77.8 232 167 151 140 21 70 26 48 41 32 70 7.78
UCF200 Series UCF216 UCF216 F216 82.6 208 165 58 22 34 23 M20 7.3
UCFC200 Series UCFC216 UC216 FC216 82.6 240 141.4 170 200 42 18 16 18 23 M20 9.3
UCP200 Series UCP216 UCP216 P216 82.6 292 232 88.9 175 30 78 25 31 M20 9
UCT200 Series UCT216 UC216 T216 82.06 235 184 165 140 21 70 26 51 41 32 70 8.5
UCF200 Series UCF217 UCF217 F217 85.7 220 175 63 24 36 23 M20 8.9
UCFC200 Series UCFC217 UC217 FC217 85.7 250 147.1 180 208 45 18 18 20 23 M20 11
UCP200 Series UCP217 UCP217 P217 85.7 310 247 95.2 187 32 83 25 31 M20 11
UCT200 Series UCT217 UC217 T217 85.7 260 198 173 162 29 73 30 54 48 38 73 11.46
UCF200 Series UCF218 UCF218 F218 96 235 187 68 24 40 23 M20 11
UCFC200 Series UCFC218 UC218 FC218 96 265 155.5 190 220 50 22 18 20 23 M20 13
UCP200 Series UCP218 UCP218 P218 96 327 262 101.6 200 33 88 27 33 M22 13
UCP200 Series UCP220 UCP220 P20 100 380 308 115 225 40 95 30 38 M24 16
UCF300 Series UCF305 UCF305 F305 38 110 80 29 13 16 16 M14 1.1
UCFS300 Series UCFS305 UC305 FS305 38 110 80 80 22 7 9 13 16 M14 14
UCP300 Series UCP305 UCP305 UCP305 38 175 132 45 85 15 45 17 20 M14 1.4
UCT300 Series UCT305 UC305 T305 38 122 89 80 76 12 36 12 26 26 16 36 1.4
UCF300 Series UCF306 UCF306 F306 43 125 95 32 15 18 16 M14 1.6
UCFS300 Series UCFS306 UC306 FS306 43 125 95 90 24 8 10 15 16 M14 19
UCP300 Series UCP306 UCP306 UCP306 43 180 140 50 95 18 50 17 20 M14 1.8
UCT300 Series UCT306 UC306 T306 43 137 100 90 85 14 41 16 28 28 18 41 1.8
UCF300 Series UCF307 UCF307 F307 48 135 100 36 16 20 19 M16 2
UCFS300 Series UCFS307 UC307 FS307 48 135 100 100 27 9 11 16 19 M16 24
UCP300 Series UCP307 UCP307 UCP307 48 210 160 56 106 20 56 17 25 M14 2.8
UCT300 Series UCT307 UC307 T307 48 150 111 100 94 15 45 16 32 30 20 45 2.4
UCF300 Series UCF308 UCF308 F308 52 150 112 40 17 23 19 M16 2.7
UCFS300 Series UCFS308 UC308 FS308 52 150 112 115 30 10 13 17 19 M16 3.3
UCP300 Series UCP308 UCP308 UCP308 52 220 170 60 116 22 60 17 27 M14 3
UCT300 Series UCT308 UC308 T308 52 162 124 112 100 17 50 18 34 32 22 50 3
UCF300 Series UCF309 UCF309 F309 57 160 125 44 18 25 19 M16 3.4
UCFS300 Series UCFS309 UC309 FS309 57 160 125 125 33 11 14 18 19 M16 4
UCP300 Series UCP309 UCP309 UCP309 57 245 190 67 129 24 67 20 30 M16 4.1
UCT300 Series UCT309 UC309 T309 57 178 138 125 110 18 55 18 38 34 24 55 4
UCF300 Series UCF310 UCF310 F310 61 175 132 48 19 28 19 M20 4.5
UCFS300 Series UCFS310 UC310 FS310 61 175 132 140 36 12 16 19 23 M20 5.3
UCP300 Series UCP310 UCP310 UCP310 61 275 212 75 143 27 75 20 35 M16 5.8
UCT300 Series UCT310 UC310 T310 61 191 151 140 117 20 61 20 40 37 27 61 5
UCF300 Series UCF311 UCF311 F311 66 185 140 52 20 30 23 M20 5.5
UCP300 Series UCP311 UCP311 UCP311 66 310 236 80 154 30 80 20 38 M16 7.4
UCT300 Series UCT311 UC311 T311 66 207 163 150 127 21 66 22 44 39 29 66 6.4
UCF300 Series UCF312 UCF312 F312 71 195 150 86 22 33 23 M20 6.5
UCFS300 Series UCFS312 UC312 FS312 71 195 150 160 42 14 18 22 23 M20 7.4
UCP300 Series UCP312 UCP312 UCP312 71 330 250 85 165 32 85 25 38 M20 9.4
UCT300 Series UCT312 UC312 T312 71 220 175 160 135 23 71 22 46 41 31 71 7.6
UCF300 Series UCF313 UCF313 F313 75 208 166 58 22 33 23 M20 7.9
UCFS300 Series UCFS313 UC313 FS313 75 208 166 175 42 18 18 22 23 M20 8.6
UCP300 Series UCP313 UCP313 UCP313 75 340 260 90 176 33 90 25 38 M20 10
UCT300 Series UCT313 UC313 T313 75 238 190 170 146 25 80 26 50 43 32 70 9.7
UCF300 Series UCF314 UCF314 F314 78 226 178 61 25 36 25 M22 9.5
UCFS300 Series UCFS314 UC314 FS314 78 226 178 185 43 18 18 25 25 M22 11.2
UCP300 Series UCP314 UCP314 UCP314 78 360 280 95 187 35 90 27 40 M22 12
UCT300 Series UCT314 UC314 T314 78 252 202 180 155 25 90 26 52 46 36 85 11
UCF300 Series UCF315 UCF315 F315 82 236 184 66 25 39 25 M22 12
UCFS300 Series UCFS315 UC315 FS315 82 236 184 200 48 18 21 25 25 M22 12.7
UCP300 Series UCP315 UCP315 UCP315 82 380 290 100 198 35 110 27 40 M22 14
UCT300 Series UCT315 UC315 T315 82 262 216 192 160 25 90 26 55 46 36 85 14
UCF300 Series UCF316 UCF316 F316 86 250 196 68 27 38 31 M27 14
UCFS300 Series UCFS316 UC316 FS316 86 250 196 210 48 20 18 31 31 M27 14.3
UCP300 Series UCP316 UCP316 UCP316 86 400 300 106 210 40 110 27 40 M22 18
UCT300 Series UCT316 UC316 T316 86 282 230 204 174 28 102 30 60 53 42 98 16
UCF300 Series UCF317 UCF317 F317 96 260 204 74 27 44 31 M27 16
UCFS300 Series UCFS317 UC317 FS317 96 260 204 220 54 20 24 31 31 M27 17.2
UCP300 Series UCP317 UCP317 UCP317 96 420 320 112 220 40 110 33 45 M27 20
UCT300 Series UCT317 UC317 T317 96 298 240 214 183 30 102 32 64 53 42 98 20
UCF300 Series UCF318 UCF318 F318 96 280 216 76 30 44 35 M30 19
UCFS300 Series UCFS318 UC318 FS318 96 280 216 240 56 20 24 35 35 M30 20.4
UCP300 Series UCP318 UCP318 UCP318 96 430 330 118 235 45 110 33 45 M27 24
UCT300 Series UCT318 UC318 T318 96 312 255 228 192 30 110 32 66 57 46 106 22
UCF300 Series UCF319 UCF319 F319 103 290 228 94 30 59 35 M30 22
UCFS300 Series UCFS319 UC319 FS319 103 290 228 250 74 20 39 35 35 M30 23.9
UCP300 Series UCP319 UCP319 UCP319 103 470 360 125 250 45 120 36 50 M30 29
UCT300 Series UCT319 UC319 T319 103 322 270 240 197 31 110 35 72 57 46 106 25
UCF300 Series UCF320 UCF320 F320 108 310 242 94 32 59 38 M33 26
UCFS300 Series UCFS320 UC320 FS320 108 310 242 260 74 20 39 38 38 M30 27.1
UCP300 Series UCP320 UCP320 UCP320 108 490 380 140 275 50 120 36 50 M30 35
UCT300 Series UCT320 UC320 T320 108 345 290 260 210 32 120 35 75 59 48 115 32

Applications of Mounted Ball Bearing Units Across Industries

Mounted ball bearing units of BKZ Industry are designed to provide reliable shaft support in various industrial environments, including medium-duty, heavy-load, and continuous operation conditions.

FAQs About Ball Bearing Units

Q1. What Is the Difference Between a Ball Bearing Unit and a Standard Ball Bearing?

A standard ball bearing is only the rolling element component designed to support loads within machinery. A ball bearing unit includes the insert bearing, housing, seals, and lubrication system, allowing easier installation, alignment, and replacement in industrial equipment.

In most cases, the terms mounted ball bearing units, bearing units, and mounted bearings are used interchangeably. They refer to a rolling element bearing installed in a housing for easy mounting and shaft support. However, strictly speaking, they are not exactly the same. Mounted bearings and bearing units describe the same category, while mounted ball bearing units are only one type of bearing unit and mounted bearing, since bearing units or mounted bearings may also use roller elements instead of ball elements.

The difference mainly lies in housing design and mounting style. UCP units are pillow block types mounted on a flat base with two bolts. UCF units are square flange types mounted vertically with four bolts for side-wall applications.

UCP300 series units are designed for heavier-duty applications and offer higher load capacity with reinforced housing structures. UCP200 series units are typically used for standard-duty machinery with moderate loads and operating conditions.

Yes, BKZ mounted bearing units are manufactured according to international dimensional standards, making them generally interchangeable with major brands. Highly recommend you contact BZK Industry to negotiate your requirements.

To select the correct unit, confirm shaft diameter, mounting configuration, load requirements, speed, and environmental conditions. For heavy loads or harsh environments, heavy-duty series or reinforced housing types should be considered. If you have no idea, you can contact BZK Industry with your requirements.

Yes, OEM and private labeling services are available. Logos can be cast or marked on the housing, and customized packaging, grease type, or coating options can be provided according to customer requirements.

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Complete Bearing Solutions from BKZ Industry

BKZ Industry supplies a comprehensive range of bearing products beyond mounted ball bearing units. Our portfolio includes bearing housings, insert ball bearings, deep groove ball bearings, tapered roller bearings, and other industrial bearing solutions designed for diverse applications.

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Mounted Ball Bearing Units

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