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Gear Couplings for Heavy- Duty Power Transmission

BKZ Industry designs and manufactures high-performance gear couplings for high torque, heavy load, and misalignment-critical applications. Our gear couplings ensure reliable torque transmission, long service life, and stable operation in demanding industrial environments such as steel mills, cement plants, mining, and power generation.

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Gear Couplings For Heavy Duty Power Transmission

Gear Coupling Performance & Advantages

BKZ Industry gear couplings are engineered to deliver maximum torque transmission with controlled misalignment, making them ideal for heavy-duty machinery.

Key Functions

Torque Transmission

Reliably transmits high torque between driving and driven shafts in demanding industrial applications.

Misalignment Compensation

Accommodates angular, axial, and limited radial misalignment, reducing stress on shafts and bearings.

Shock Load Resistance

Suitable for frequent start-stop, reversing, and impact load conditions.

Reliable Lubrication & Sealing

Advanced sealing design minimizes lubricant leakage and extends maintenance intervals.

Advantages

High Load Capacity

Designed for heavy loads and shock conditions, suitable for high-torque and high-speed applications.

Long Service Life

Hardened gear teeth and proper lubrication ensure excellent wear resistance and long operating life.

Easy Maintenance

Simple structure allows easy inspection, lubrication, and replacement, reducing downtime.

Wide Application Range

Suitable for rolling mills, cement plants, conveyors, cranes, compressors, fans, and other industrial machinery.

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Standard & Custom Gear Coupling Solutions

BKZ Industry supplies a wide range of gear coupling types, including GIICL, GIICLZ, GLCD, and NGCL, as well as customized gear couplings tailored to specific installation and application requirements.

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Designed for general industrial applications with high torque transmission requirements and moderate misalignment.

Giicl A Gear Couplings

Designed for general industrial applications with high torque transmission requirements and moderate misalignment.

Giicl B Gear Couplings

Equipped with improved sealing structures to prevent lubricant leakage, ideal for dusty, high-temperature, or harsh working environments.

Giiclz A Gear Couplings

Equipped with improved sealing structures to prevent lubricant leakage, ideal for dusty, high-temperature, or harsh working environments.

Giiclz B Gear Couplings

Features a double engagement design that provides higher torque capacity and improved load distribution. Suitable for heavy shock loads and continuous operation.

Glcd Gear Couplings

Designed for very high torque, severe misalignment, and harsh operating conditions, making them suitable for steel mills, rolling mills, large crushers, and heavy-duty conveyors.

Ngcl A Gear Couplings

Designed for very high torque, severe misalignment, and harsh operating conditions, making them suitable for steel mills, rolling mills, large crushers, and heavy-duty conveyors.

Ngcl B Gear Couplings

Not sure which model fits your application or if a customized gear coupling is required? 


Send us your torque, speed, shaft size, and misalignment data — our engineers will assist with selection. Contact us now.

Gear Coupling Size Chart

It is essential to carefully review gear coupling parameters and dimensions when selecting the correct model. If you are unsure, please contact us for technical support.

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Download PDF Size Chart >

Type Sub-Type Model Nominal torque Tm (kn.m) Permissble speed [n](rpm) Shaft hole diameter D1,D2 Shaft hole length-Y（mm） Shaft hole length-J1（mm） D（mm） D1（mm） D2（mm） D3（mm） E（mm） F（mm） G（mm） A（mm） L（mm） B（mm） C（mm） C1（mm） H（mm） B1（mm） B2（mm） B3（mm） Grease Lubricant Weight (kg)
GIICL A GIICL1 0.4 4000 16-35 42-82 38-60 103 71 50 36 8 76 38 51 5.1
GIICL A GIICL2 0.71 4000 20-45 52-112 44-84 115 83 60 42 8 88 42 70 6.7
GIICL A GIICL3 1.12 4000 22-56 52-112 44-84 127 95 75 44 8 90 42 68 9.6
GIICL A GIICL4 1.8 4000 38-65 82-142 60-107 149 116 90 49 8 98 42 87 17.4
GIICL A GIICL5 3.15 4000 40-75 112-142 84-107 167 134 105 55 10 108 42 125 26.6
GIICL A GIICL6 5 4000 45-90 112-172 84-132 187 153 125 56 10 110 42 148 38.7
GIICL A GIICL7 7.1 3750 50-100 112-212 84-167 204 170 140 60 10 118 42 175 58.2
GIICL A GIICL8 10 3300 55-110 112-212 84-167 230 186 155 67 12 142 47 268 73.6
GIICL A GIICL9 16 3000 60-130 142-252 107-202 256 212 180 69 12 146 47 310 117
GIICL A GIICL10 22.4 2650 65-150 142-252 107-202 287 239 200 78 14 164 47 472 144
GIICL A GIICL11 35.5 2350 70-170 142-302 107-242 325 276 235 81 14 170 47 550 300
GIICL A GIICL12 50 2100 75-200 142-352 107-282 362 313 270 89 16 190 49 695 348
GIICL A GIICL13 71 1850 150-220 252-352 202-282 412 350 300 98 18 208 49 1019 440
GIICL B GIICL14 112 1650 170-250 302-410 242-330 462 418 335 172 22 296 63 3900 682
GIICL B GIICL15 180 1500 190-280 352-470 282-380 512 465 380 182 22 316 63 3700 977
GIICL B GIICL16 250 1300 220-320 352-470 282-380 580 522 430 209 28 354 67 4500 1828
GIICL B GIICL17 355 1200 250-360 410-550 330-450 644 582 490 198 28 364 67 4900 2676
GIICL B GIICL18 500 1050 280-400 470-650 380-540 726 654 540 222 28 430 75 7000 3560
GIICL B GIICL19 710 950 300-460 470-650 380-540 818 748 630 232 32 440 75 8900 4975
GIICL B GIICL20 1000 800 360-530 550-800 450-680 928 832 720 247 32 470 75 111000 7159
GIICL B GIICL21 1400 750 400-600 650-800 540-680 1022 924 810 255 40 490 75 13000 8448
GIICL B GIICL22 1800 650 450-670 650-900 540-780 1134 1028 915 262 40 510 75 16000 1340
GIICL B GIICL23 2500 600 530-750 800-900 680-780 1282 1174 1030 299 50 580 80 28000 1340
GIICL B GIICL24 3550 550 560-850 800-1000 680-880 1428 1320 1175 317 50 610 80 33000 1883
GIICL B GIICL25 4500 460 670-1000 900-1000 780-1000 1644 1538 1390 325 50 620 80 43000 2779
GIICLZ A GIICLZ1 0.4 4000 16-35 42-112 38-84 103 50 71 71 8 8 38 38 31 7
GIICLZ A GIICLZ2 0.71 4000 20-45 52-142 44-107 115 60 83 83 8 8 45 42 42 7
GIICLZ A GIICLZ3 1.12 4000 22-56 52-142 44-107 127 75 95 95 8 8 45 42 42 11
GIICLZ A GIICLZ4 1.8 4000 38-65 82-172 60-132 149 90 116 116 8 8 49 42 53 18
GIICLZ A GIICLZ5 3.15 4000 40-75 112-172 84-132 167 105 134 134 10 10 54 42 77 28
GIICLZ A GIICLZ6 5 4000 45-90 112-212 84-167 187 125 153 153 10 10 55 42 91 39
GIICLZ A GIICLZ7 7.1 3750 50-100 112-212 84-167 204 140 170 170 10 10 59 42 108 58
GIICLZ A GIICLZ8 10 3300 55-110 112-212 84-167 230 155 186 186 12 12 71 47 161 74
GIICLZ A GIICLZ9 16 3000 60-130 142-252 107-202 256 180 212 212 12 12 73 47 184 116
GIICLZ A GIICLZ10 22.4 2650 65-150 142-252 107-202 287 200 239 239 14 14 82 47 276 144
GIICLZ A GIICLZ11 35.5 2350 110-170 212-302 167-242 325 235 276 250 14 14 85 47 322 230
GIICLZ A GIICLZ12 50 2100 130-200 252-352 202-282 362 270 313 286 16 16 95 49 404 348
GIICLZ A GIICLZ13 71 1850 150-220 252-352 202-282 412 300 350 322 18 18 104 49 585 438
GIICLZ B GIICLZ14 112 1650 170-250 302-410 242-330 462 – 335 420 22 22 148 63 1600 655
GIICLZ B GIICLZ15 180 1500 190-280 352-470 282-380 512 – 380 465 22 22 158 63 2100 946
GIICLZ B GIICLZ16 250 1300 220-320 352-470 282-380 580 – 430 522 28 28 177 67 2500 1232
GIICLZ B GIICLZ17 355 1200 250-360 410-550 330-450 644 – 490 582 28 28 182 67 2700 1828
GIICLZ B GIICLZ18 500 1050 280-400 470-650 380-540 726 – 540 658 28 28 215 75 3900 2674
GIICLZ B GIICLZ19 710 950 300-460 470-650 380-540 818 – 630 748 32 32 220 75 5000 3565
GIICLZ B GIICLZ20 1000 800 360-530 550-800 450-680 928 – 720 838 32 32 235 75 6200 5198
GIICLZ B GIICLZ21 1400 750 400-600 650-800 540-680 1022 – 810 928 40 40 245 75 7000 7124
GIICLZ B GIICLZ22 1800 650 450-670 650-900 540-780 1134 – 915 1036 40 40 255 75 8700 8978
GIICLZ B GIICLZ23 2500 600 530-750 800-900 680-780 1282 – 1030 1178 50 50 290 80 15000 13124
GIICLZ B GIICLZ24 3550 550 560-850 800-1000 680-880 1428 – 1175 1322 50 50 305 80 18000 18659
GIICLZ B GIICLZ25 4500 460 670-1000 900-1000 780-1000 1644 – 1390 1538 50 50 310 80 23000 27797
NGCL A NGCL1 335 4000 20-35 52-82 38-60 103 71 50 160 56 30 8 2 42 38 68 51 8
NGCL A NGCL2 630 4000 25-45 62-112 44-84 115 83 60 160 68 36 8 2 48 42 68 70 11
NGCL A NGCL3 0 3800 30-35 62-112 44-84 127 95 75 200 70 41 8 2 49 42 85 107 17
NGCL A NGCL4 1600 3800 40-65 82-142 60-107 149 116 90 200 74 41 8 2 53 42 85 137 23.8
NGCL A NGCL5 2800 3000 45-75 112-142 84-107 167 134 105 250 84 48 8 2.5 58 42 105 201 34.4
NGCL A NGCL6 4500 3000 50-90 112-172 84-132 187 153 125 250 85 49 9 2.5 59 42 105 238 47.6
NGCL A NGCL7 6300 2400 60-100 112-212 84-167 204 170 140 315 93 53 9 2.5 63 42 132 298 71.1
NGCL A NGCL8 9000 190 70-110 112-212 84-167 230 186 155 400 112 64 12 3 77 47 168 465 108
NGCL A NGCL9 14000 1500 80-130 142-252 107-202 256 212 180 500 119 71 13 3 80 47 210 561 167
NGCL A NGCL10 20000 1200 80-150 142-252 107-202 287 239 200 630 120 75 15 3.5 90 47 265 734 237
NGCL A NGCL11 31500 1050 100-170 142-302 107-242 325 276 235 710 134 77 16 3.5 94 47 298 956 357
NGCL A NGCL12 45000 1050 100-200 142-352 107-282 362 313 270 710 164 84 17 4 104 49 298 1320 464
NGCL A NGCL13 63000 950 150-220 252-352 202-282 412 350 300 800 165 88 18 4.5 113 49 335 1600 596
NGCL B NGCL14 100000 950 170-220 302-410 242-330 462 420 335 800 92 20 157 63 335 3500
GCLD GCLD1 1000 4000 16-35 52-112 38-84 127 95 75 66 27 42 107 9.6
GCLD GCLD2 1600 4000 20-45 82-142 60-107 149 116 90 70 26.5 42 137 16.4
GCLD GCLD3 2800 4000 22-56 112-142 84-107 167 134 105 80 33 42 201 22.4
GCLD GCLD4 4500 4000 38-65 112-172 84-132 137 153 125 81 33.5 42 238 35.6
GCLD GCLD5 6300 3750 40-75 112-212 84-107 204 170 140 89 37.5 42 298 53.9
GCLD GCLD6 9000 3300 45-90 112-212 84-167 230 186 155 106 43.5 47 465 67.5
GCLD GCLD7 14000 3000 50-100 142-252 107-202 256 212 180 112 48 47 561 106.7
GCLD GCLD8 20000 2650 50-100 142-252 107-202 287 239 200 112 40.5 47 734 123
GCLD GCLD9 9000 2350 60-130 142-302 107-242 325 276 235 125 49.5 47 956 212
GCLD GCLD10 31500 2100 60-150 142-352 107-282 362 3 270 149 65 49 1320 319

Gear Coupling Applications

BKZ gear couplings are widely used in industries where high torque, reliability, and continuous operation are critical.

FAQs About Gear Couplings

Q1. What are the Main Components of a Gear Coupling?

A gear coupling consists of two externally toothed hubs connected by an internally toothed sleeve, secured with high-strength bolts, seals, and lubricant to ensure reliable torque transmission and long service life.

Gear couplings are commonly manufactured from alloy steel, carbon steel, stainless steel, or case-hardened steel, selected based on torque requirements, operating environment, and service conditions.

Yes, gear couplings are designed according to international standards such as ISO, DIN, AGMA, or ANSI, defining torque ratings, dimensions, and tolerances, while still allowing customization for specific applications. You can contact us with your requirements and we will help you select gear couplings for you.

Gear couplings are used in heavy-duty applications requiring high torque capacity, excellent misalignment compensation, and strong shock load resistance, while flange couplings are suitable for simple machinery with limited misalignment, lower torque demands, and minimal shock loads.

Gear couplings are used in heavy-duty machinery requiring very high torque capacity, mechanical misalignment compensation, and excellent shock load resistance, while flexible couplings are applied in pumps, fans, and compressors with low to medium torque, elastic misalignment, and moderate shock handling.

Gear couplings provide higher torque capacity, better shock load resistance, and longer service life, making them ideal for heavy-duty, continuous operation compared to chain or grid couplings.

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More Bearings from BKZ

Except gear coupling, BKZ Industry is a bearing manufactuerer. It offers all the bearings you need. Here are major ones.

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Gear Couplings

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