KD1 Coupling With MT Disc Packs
Size range: 103 to 453
Bore range: .50 - 5.50"
Overview: Unitized Disc Pack replaced without moving connected machines
Medium Duty Applications
KD® Disc Couplings
The KD® Disc Couplings are specifically designed to accommodate general purpose drive system applications. These include the following:
- Centrifugal Pumps
- Compressors
- Generators
- Cooling towers
- Machine tools
- Printing machines
- Pulp & Paper machines
The KD Couplings transmit torque. They also provide for angular and axial misalignment between shafts with a specific configuration. That configuration is comprised of shaft-mounted hubs connected through flexible disc packs with spacer or sleeve assemblies.
All KD Couplings use stainless steel discs as flexible members, providing high strength and good corrosion resistance. The streamline disk pack design results in the reaction load on equipment bearings being minimized. These disc pack couplings are inherently self-centering; additional provision for limited end float is not required.
Most disc packs are unitized and self-locking nuts are provided. This simplifies installation and replacement.
The KD Disc Couplings are now available in an expanded range of sizes and styles suitable for common installations. Or if you need something special, we can design a coupling to meet your specific requirements.
Features & Benefits:
- Piloted Flange.
- Standard disc couplings - no lubrication.
- Theory of Operation: Transmits torque through thin scalloped flexible disc pack.
- Available from shelf for immediate shipment.
- Designed to meet API 610.
- Close coupled and spacer style.
- Custom-design available.
- Wide variety of styles and sizes.
Related Documents
- Compressor and Pump Couplings Brochure
- Coupling Recertification
- Floating Shaft Disc Couplings Installation and Maintenance
- How Disc Couplings Work
- Identifying Disc Coupling Failures Brochure
- Industrial Coupling Product Catalog
- Installation and maintenance
- 15-112E KD2 Disc Coupling Installation and Maintenance
- Turbomachinery coupling catalog
Additional Data
| DISC STYLE | DESIGNATION |
|---|---|
| Close Coupled | KD1, KD10, KD11 |
| Spacer | KD2, KD20, KD21, KD22 |
| Cooling Tower | KD33 |
| Floating Shaft | KD4, KD41/KD42, KD42 Slide |
Close Coupled
KD10 Coupling With HS Disc Packs
Size range: 103 to 905
Bore range: .50 - 11.50"
Overview: Unitized Disc Pack replaced without moving connected machines
Heavy Duty Applications
Rating similar to gear couplings
KD11 Coupling With HT Disc Packs
Size range: 103 to 905
Bore range: .50 - 11.50"
Overview: Unitized Disc Pack
Heavy Duty Applications
Rating similar to gear couplings
KD1 Coupling
The KD1 Coupling is designed for close coupled applications with minimal to short distance between shaft ends and light to medium loading. It can directly replace most REWTHOMAS*DBZ couplings and the unitized disc pack makes the installation simpler and easier.
| Size | Max. Bore(in) | Coupling Rating (HP/100 RPM) | Torque Rating | Maximum Speed Not Balanced(RPM) | Maximum Speed Balanced(RPM) | Total Weight(lbs) | Total WR2 (lb-in2) | Axial Capacity(in) | |
| Continuous(in-lb) | Peak(in-lb) | ||||||||
| 103 | 1.62 | 4.3 | 2710 | 5420 | 5400 | 9700 | 8.1 | 18.6 | +/-060 |
| 153 | 2.25 | 12.5 | 7880 | 15760 | 4500 | 7500 | 19.8 | 83.9 | +/-075 |
| 203 | 2.75 | 22.9 | 14400 | 28800 | 4100 | 6700 | 31.9 | 184 | +/-090 |
| 253 | 3.25 | 37.5 | 23600 | 47200 | 3600 | 5600 | 51.6 | 417 | +/-105 |
| 303 | 3.88 | 60.0 | 37800 | 75600 | 3200 | 5100 | 77.3 | 856 | +/-125 |
| 353 | 4.38 | 100 | 63000 | 126000 | 2900 | 4400 | 129 | 1940 | +/-150 |
| 403 | 5.00 | 155 | 97700 | 195000 | 2600 | 4000 | 189 | 3720 | +/-175 |
| 353 | 5.50 | 205 | 129000 | 258000 | 2400 | 3800 | 223 | 5170 | +/-200 |
KD10 Coupling
The KD10 coupling is designed to work in place of standard close coupled gear coupling applications with minimal distance between shaft ends. the power capacity of the KD10 coupling is the highest in the industry, allowing the easiest conversion from a lubricated coupling to a low maintenance disc coupling.
| Size | Max. Bore(in) | Coupling Rating (HP/100 RPM) | Torque Rating | Maximum Speed Not Balanced(RPM) | Maximum Speed Balanced(RPM) | Total Weight(lbs) | Total WR2(lb-in2) | Axial Capacity(in) | |
| Continuous(in-lb) | Peak(in-lb) | ||||||||
| 103 | 1.50 | 6.3 | 4000 | 8000 | 5400 | 9700 | 6.9 | 16 | +/-080 |
| 153 | 2.12 | 21.6 | 13600 | 27200 | 4500 | 7500 | 17.5 | 73 | +/-140 |
| 204 | 2.62 | 57.1 | 36000 | 72000 | 4100 | 6700 | 27.2 | 148 | +/-110 |
| 254 | 3.25 | 82.5 | 52000 | 104000 | 3600 | 5600 | 47.2 | 400 | +/-140 |
| 304 | 3.75 | 141 | 89000 | 178000 | 3200 | 5100 | 78.0 | 916 | +/-170 |
| 354 | 4.25 | 238 | 145000 | 290000 | 2900 | 4400 | 134 | 2140 | +/-200 |
| 404 | 4.75 | 340 | 215000 | 430000 | 2600 | 4000 | 193 | 3850 | +/-225 |
| 454 | 5.50 | 405 | 255000 | 510000 | 2400 | 3800 | 229 | 5540 | +/-250 |
| 504 | 5.75 | 570 | 360000 | 720000 | 2200 | 3500 | 316 | 8640 | +/-275 |
| 554 | 6.25 | 800 | 505000 | 1010000 | 1900 | 3000 | 404 | 13100 | +/-300 |
| 604 | 6.75 | 1050 | 660000 | 1320000 | 1850 | 2900 | 559 | 22200 | +/-320 |
| 705 | 8.50 | 2400 | 1510000 | 3020000 | 1800 | 2800 | 925 | 56400 | +/-270 |
| 805 | 9.50 | 3670 | 2100000 | 4200000 | 1600 | 2500 | 1340 | 102000 | +/-310 |
| 905 | 11.50 | 4130 | 2300000 | 4600000 | 1500 | 2300 | 1700 | 163000 | +/-400 |
KD11 Coupling
KD11 coupling is designed to work in place of standard close coupled gear coupling applications with higher speed service. the power capacity of the KD11 coupling is the highest in the industry, allowing the easiest conversion from a lubricated coupling to a low maintenance disc coupling.
| Size | Max. Bore(in) | Coupling Rating (HP/100 RPM) | Torque Rating | Maximum Speed (RPM) | Total Weight(lbs) | Total WR2 (lb-in2) | Axial Capacity(in) | |
| Continuous(in-lb) | Peak(in-lb) | |||||||
| 103 | 1.50 | 6.3 | 4000 | 8000 | 14200 | 9.0 | 27 | +/-080 |
| 153 | 2.12 | 21.6 | 13600 | 27200 | 12500 | 18.6 | 90 | +/-140 |
| 204 | 2.62 | 57.1 | 36000 | 72000 | 11100 | 29.2 | 189 | +/-110 |
| 254 | 3.25 | 82.5 | 52000 | 104000 | 9900 | 43.8 | 400 | +/-140 |
| 304 | 3.75 | 141 | 89000 | 178000 | 9700 | 69.6 | 839 | +/-170 |
| 354 | 4.25 | 238 | 150000 | 300000 | 7500 | 111 | 1790 | +/-200 |
| 404 | 4.75 | 340 | 215000 | 430000 | 6600 | 168 | 3450 | +/-225 |
| 454 | 5.50 | 405 | 255000 | 510000 | 6000 | 204 | 5220 | +/-250 |
| 504 | 5.75 | 570 | 360000 | 720000 | 5600 | 272 | 7920 | +/-275 |
| 554 | 6.25 | 800 | 505000 | 1010000 | 4800 | 364 | 13200 | +/-300 |
| 604 | 6.75 | 1050 | 660000 | 1320000 | 4600 | 458 | 21100 | +/-320 |
| 705 | 8.50 | 2400 | 1510000 | 3020000 | 3860 | 824 | 52400 | +/-270 |
| 805 | 9.50 | 3670 | 2310000 | 4620000 | 3450 | 1220 | 98000 | +/-310 |
| 905 | 11.50 | 4130 | 2600000 | 5200000 | 1520 | 1520 | 151000 | +/-400 |
Spacer Styles
KD2® Coupling With MT Disc Packs
Size range: 103 to 453
Bore range: .50 - 5.50"
Overview: Unitized Disc Pack replaced without moving connected machines
Medium Duty Applications
KD20 Coupling With HT Disc Packs
Size range: 103 to 905
Bore range: .50 - 11.50"
Overview: Unitized Disc Pack replaced without moving connected machines
Heavy Duty Applications
Rating similar to gear couplings
KD21 Coupling With HT Disc Packs
Size range: 103 to 905
Bore range: .50 - 11.50"
Overview: Unitized Disc Pack
Heavy Duty Applications
Rating similar to gear couplings
KD2® Coupling
The KD2 coupling is designed for medium duty applications requiring moderate shaft separations, and was specifically engineered to meet API610 specifications for industrial, pump couplings. Consisting of three main parts, two hubs and a factory assembled flexible center section which installs or drops out as one unit, the KD2 greatly simplifies installation or maintenance.
| Size | Max. Bores(in) | Coupling Rating (HP/100 RPM) | Torque Rating | Maximum Speed (RPM) | Total Weight(lbs) | Total WR2 (lb-in2) | Spacer Tube Weight per inch | Axial Capacity(in) | |||
| Std & Long Hub | Jumbo Hub | Continuous(in-lb) | Peak(in-lb) | Weight(lbs) | WR2 (lb-in2) | ||||||
| 023 | 1.50 | 2.00 | 2.3 | 1450 | 2900 | 25500 | 5.5 | 10.5 | 0.17 | 0.10 | +/-040 |
| 103 | 1.88 | 2.75 | 4.3 | 2710 | 5420 | 17000 | 9.9 | 22.0 | 0.44 | 0.45 | +/-060 |
| 153 | 2.88 | 4.00 | 12.5 | 7880 | 15760 | 14200 | 23.2 | 93.1 | 0.54 | 1.06 | +/-075 |
| 203 | 3.25 | 4.62 | 22.9 | 14400 | 28800 | 12800 | 35.5 | 205 | 0.56 | 1.67 | +/-090 |
| 253 | 4.00 | 5.62 | 37.5 | 23600 | 47200 | 11500 | 58.8 | 475 | 0.73 | 3.59 | +/-105 |
| 303 | 4.75 | 6.50 | 60.0 | 37800 | 75600 | 10000 | 89.6 | 989 | 1.14 | 7.52 | +/-125 |
| 353 | 5.50 | 7.62 | 100 | 63000 | 126000 | 8500 | 145 | 2160 | 1.57 | 12.70 | +/-150 |
| 403 | 6.25 | 8.75 | 155 | 97700 | 195000 | 7500 | 220 | 4290 | 1.84 | 19.80 | +/-175 |
| 453 | 7.25 | 9.38 | 205 | 129000 | 258000 | 7000 | 261 | 6180 | 2.01 | 27.00 | +/-200 |
KD20 Coupling
The KD20 coupling is designed for heavy duty applications requiring moderate shaft separations, and was specifically engineered to meet API610 specifications for industrial, pump couplings. Consisting of three main parts, two hubs and a factory assembled flexible center section which installs or drops out as one unit, the KD20 greatly simplifies installation or maintenance.
| Size | Max. Bores(in) | Coupling Rating (HP/100 RPM) | Torque Rating | Maximum Speed (RPM) | Total Weight(lbs) | Total WR2 (lb-in2) | Spacer Tube Weight per inch | Axial Capacity(in) | |||
| Std & Long Hub | Jumbo Hub | Continuous(in-lb) | Peak(in-lb) | Weight(lbs) | WR2(lb-in2) | ||||||
| 204 | 3.25 | 4.62 | 57.1 | 36000 | 72000 | 13000 | 39.2 | 230 | 0.81 | 2.67 | +/-110 |
| 254 | 4.00 | 5.62 | 82.5 | 52000 | 104000 | 11200 | 61.2 | 510 | 0.79 | 4.36 | +/-140 |
| 304 | 4.75 | 6.5 | 141 | 89000 | 178000 | 9900 | 104 | 1190 | 1.17 | 8.06 | +/-170 |
| 354 | 5.50 | 7.62 | 238 | 150000 | 300000 | 8800 | 172 | 2630 | 1.96 | 17.0 | +/-200 |
| 404 | 6.25 | 8.75 | 340 | 215000 | 430000 | 7800 | 251 | 4920 | 2.21 | 24.3 | +/-225 |
| 454 | 7.25 | 9.38 | 405 | 255000 | 510000 | 7200 | 302 | 7200 | 2.54 | 37.0 | +/-250 |
| 504 | 7.50 | - | 570 | 360000 | 720000 | 6600 | 427 | 11600 | 3.67 | 62.6 | +/-275 |
| 554 | 8.25 | - | 800 | 505000 | 1010000 | 6100 | 569 | 18200 | 3.89 | 74.7 | +/-300 |
| 604 | 9.00 | - | 1050 | 660000 | 1320000 | 5600 | 777 | 29500 | 5.21 | 115 | +/-320 |
| 705 | 10.88 | - | 2400 | 1510000 | 3020000 | 4500 | 1360 | 77500 | 9.40 | 303 | +/-270 |
| 805 | 12.25 | - | 3670 | 2310000 | 4620000 | 4000 | 2060 | 150000 | 12.6 | 507 | +/-310 |
| 905 | 13.50 | - | 4130 | 2600000 | 5200000 | 3600 | 2490 | 227000 | 11.7 | 662 | +/-400 |
KD21 Coupling
The KD21 coupling is designed for medium and heavy duty applications requiring moderate shaft separations. The minimal number of components yields an economical disc coupling solution to spacer applications. The larger sizes available in the KD21 Series allow application to larger, higher power machines.
| Size | Max. Bores(in) | Coupling Rating (HP/100 RPM) | Torque Rating | Maximum Speed (RPM) | Total Weight(lbs) | Total WR2 (lb-in2) | Spacer Tube Weight per inch | Axial Capacity(in) | ||
| Continuous(in-lb) | Peak(in-lb) | Weight(lbs) | WR2 (lb-in2) | |||||||
| 053 | 1.75 | 3.2 | 2000 | 4000 | 8200 | 7.7 | 16 | 0.50 | 0.42 | +/-055 |
| 103 | 1.75 | 6.3 | 4000 | 8000 | 18200 | 7.8 | 16 | 0.24 | 0.27 | +/-080 |
| 153 | 2.50 | 21.6 | 13600 | 27200 | 14800 | 17.7 | 67 | 0.39 | 0.80 | +/-140 |
| 204 | 3.00 | 57.1 | 36000 | 72000 | 13000 | 29.8 | 160 | 0.81 | 2.67 | +/-110 |
| 254 | 3.75 | 82.5 | 52000 | 104000 | 11200 | 44.3 | 336 | 0.79 | 4.36 | +/-140 |
| 304 | 4.50 | 141 | 89000 | 178000 | 9900 | 70.4 | 745 | 1.17 | 8.06 | +/-170 |
| 354 | 5.00 | 238 | 150000 | 300000 | 8800 | 117 | 1640 | 1.96 | 17.0 | +/-200 |
| 404 | 5.50 | 340 | 215000 | 430000 | 7800 | 177 | 3150 | 2.21 | 24.3 | +/-225 |
| 454 | 6.38 | 405 | 255000 | 510000 | 7200 | 205 | 4360 | 2.54 | 37.0 | +/-250 |
| 504 | 7.00 | 570 | 360000 | 720000 | 6600 | 305 | 7640 | 3.67 | 62.6 | +/-275 |
| 554 | 7.75 | 800 | 505000 | 1010000 | 6100 | 402 | 11800 | 3.89 | 74.7 | +/-300 |
| 604 | 8.50 | 1050 | 660000 | 1320000 | 5600 | 512 | 17800 | 5.21 | 115 | +/-320 |
| 705 | 10.75 | 2400 | 1510000 | 3020000 | 4500 | 922 | 50000 | 9.40 | 303 | +/-270 |
| 805 | 12.00 | 3670 | 2310000 | 4620000 | 4000 | 1350 | 93800 | 12.6 | 507 | +/-310 |
| 905 | 13.50 | 4130 | 2600000 | 5200000 | 3600 | 1700 | 146000 | 11.8 | 675 | +/-400 |
KD22 Coupling
The KD22 coupling is designed to be the most direct replacement for standard spacer style gear couplings and is meant for heavy duty applications where the flexible section must be located on the equipment shafts. the power capacity of the KD22 coupling is the highest in the industry, allowing the easiest conversion from a lubricated coupling to a low maintenance disc coupling.
| Size | Max. Bore(in) | Max. Continuous Rating (HP/100 RPM) | Torque Rating | Maximum Speed (RPM) | Axial Capacity(in) | |
| Continuous(in-lb) | Peak(in-lb) | |||||
| 103 | 1.50 | 6.3 | 4000 | 8000 | 17000 | +/-080 |
| 153 | 2.12 | 21.6 | 13600 | 27200 | 13500 | +/-140 |
| 204 | 2.62 | 57.1 | 36000 | 72000 | 12000 | +/-110 |
| 254 | 3.25 | 82.5 | 52000 | 104000 | 9800 | +/-140 |
| 304 | 3.75 | 141 | 89000 | 178000 | 8400 | +/-170 |
| 354 | 4.25 | 238 | 150000 | 300000 | 7400 | +/-200 |
| 404 | 4.75 | 340 | 215000 | 430000 | 6750 | +/-225 |
| 454 | 5.50 | 405 | 255000 | 510000 | 6000 | +/-250 |
| 504 | 5.75 | 570 | 360000 | 720000 | 5500 | +/-275 |
| 554 | 6.25 | 800 | 505000 | 1010000 | 4800 | +/-300 |
| 604 | 6.75 | 1050 | 660000 | 1320000 | 5100 | +/-320 |
| 705 | 8.50 | 2400 | 1510000 | 3020000 | 4500 | +/-270 |
| 805 | 9.50 | 3670 | 1278000 | 2556000 | 3950 | +/-310 |
| 905 | 11.50 | 4130 | 1784000 | 3568000 | 3300 | +/-400 |
COOLING TOWER
KD2® Coupling With MT Disc Packs
Size range: 103 to 453
Bore range: .50 - 5.50"
Overview: Unitized Disc Pack replaced without moving connected machines
Medium Duty Applications
KD33 Coupling
Designed specifically for cooling tower drives and long span applications, the KD33 coupling is easy to handle, install and maintain. The drive shaft is a corrosion resistant lightweight composite tube of either special fiberglass or carbon graphite fibers engineered to provide the optimum combination of strength and bending stiffness required of cooling tower couplings.
Single Flex & Floating Shafts
KD4 Coupling With HT Disc Packs
Size range: 103 to 905
Bore range: .50 - 13.50"
Overview: Single Flex
Unitized "Drop-Out" Disc Pack
Heavy Duty Applications
KD41 Coupling With HT Disc Packs
Size range: 103 to 905
Bore range: .50 - 13.50"
Overview: Floating Shaft design
Unitized "Drop-Out" Disc Pack
Heavy Duty Applications
KD42 Coupling With HT Disc Packs
Size range: 103 to 905
Bore range: .50 - 11.50" flex-half
Overview: Floating Shaft design
Bolts Directly to Gear Coupling Rigids
Unitized Disc Pack
Heavy Duty Applications
KD4 Coupling
The KD4 coupling is designed for medium and heavy duty applications requiring only angular misalignment capacity as in three bearing installations or floating shaft arrangements. Consisting of three main parts, two hubs and a unitized disc pack which installs or drops out, the KD4 simplifies installation or maintenance. The close tolerance bolts and safety overload washers insure superior performance and trouble free operation.
| Size | Max. Bore(in) | Coupling Rating (HP/100 RPM) | Torque Rating | Maximum Speed (RPM) | Total Weight(lbs) | Total WR2 (lb-in2) | Axial Capacity(in) | |
| Continuous(in-lb) | Peak(in-lb) | |||||||
| 103 | 1.75 | 6.3 | 4000 | 8000 | 18200 | 5.2 | 9.5 | +/-040 |
| 153 | 2.50 | 21.6 | 13600 | 27200 | 14800 | 11.4 | 38.5 | +/-070 |
| 204 | 3.00 | 57.1 | 36000 | 72000 | 13000 | 24.1 | 124 | +/-055 |
| 254 | 3.75 | 82.5 | 52000 | 104000 | 11200 | 32.2 | 212 | +/-070 |
| 304 | 4.50 | 141 | 89000 | 178000 | 9900 | 50.5 | 462 | +/-085 |
| 354 | 5.00 | 238 | 150000 | 300000 | 8800 | 78.5 | 980 | +/-100 |
| 404 | 5.50 | 340 | 215000 | 430000 | 7800 | 118 | 1880 | +/-113 |
| 454 | 6.38 | 405 | 255000 | 510000 | 7200 | 150 | 2780 | +/-125 |
| 504 | 7.00 | 570 | 360000 | 720000 | 6600 | 197 | 4380 | +/-138 |
| 554 | 7.75 | 800 | 505000 | 1010000 | 6100 | 277 | 7250 | +/-150 |
| 604 | 8.50 | 1050 | 660000 | 1320000 | 5600 | 348 | 10900 | +/-160 |
| 705 | 10.75 | 2400 | 1510000 | 3020000 | 4500 | 625 | 30500 | +/-135 |
| 805 | 12.00 | 3670 | 2310000 | 4620000 | 4000 | 915 | 57000 | +/-155 |
| 905 | 13.50 | 4130 | 2600000 | 5200000 | 3600 | 1250 | 95000 | +/-200 |
KD41 Coupling
The KD41 coupling is designed for medium and heavy duty applications requiring longer shaft separations. The minimal number of components yields an economical disc coupling solution to spacer applications. The larger sizes available in the KD41 Series allow application to larger, higher power machines.
| Size | Max. Bore(in) | Coupling Rating (HP/100 RPM) | Torque Rating | Total Weight(lbs) | Total WR2 (lb-in2) | Axial Capacity(in) | |
| Continuous(in-lb) | Peak(in-lb) | ||||||
| 103 | 1.75 | 6.3 | 4000 | 8000 | 10.4 | 19 | +/-080 |
| 153 | 2.50 | 21.6 | 13600 | 27200 | 22.8 | 77 | +/-140 |
| 204 | 3.00 | 57.1 | 36000 | 72000 | 48.2 | 247 | +/-110 |
| 254 | 3.75 | 82.5 | 52000 | 104000 | 64.5 | 425 | +/-140 |
| 304 | 4.50 | 141 | 89000 | 178000 | 101 | 925 | +/-170 |
| 354 | 5.00 | 238 | 150000 | 300000 | 157 | 1960 | +/-200 |
| 404 | 5.50 | 340 | 215000 | 430000 | 237 | 3760 | +/-225 |
| 454 | 6.38 | 405 | 255000 | 510000 | 299 | 5550 | +/-250 |
| 504 | 7.00 | 570 | 360000 | 720000 | 395 | 8750 | +/-275 |
| 554 | 7.75 | 800 | 505000 | 1010000 | 554 | 14500 | +/-300 |
| 604 | 8.50 | 1050 | 660000 | 1320000 | 697 | 21700 | +/-320 |
| 705 | 10.75 | 2400 | 1510000 | 3020000 | 1250 | 61000 | +/-270 |
| 805 | 12.00 | 3670 | 2310000 | 4620000 | 1830 | 114000 | +/-310 |
| 905 | 13.50 | 4130 | 2600000 | 5200000 | 2510 | 190000 | +/-400 |
KD42 Coupling
The KD42 coupling is designed for medium and heavy duty applications requiring longer shaft separations. The minimal number of components yields an economical disc coupling solution to spacer applications. The larger sizes available in the KD42 Series allow application to larger, higher power machines.
| Size | Flex Max. Bore(in) | Coupling Rating (HP/100 RPM) | Torque Rating | Axial Capacity(in) | |
| Continuous(in-lb) | Peak(in-lb) | ||||
| 103 | 1.50 | 6.3 | 4000 | 8000 | +/-080 |
| 153 | 2.12 | 21.6 | 13600 | 27200 | +/-140 |
| 204 | 2.62 | 57.1 | 36000 | 72000 | +/-110 |
| 254 | 3.25 | 82.5 | 52000 | 104000 | +/-140 |
| 304 | 3.75 | 141 | 89000 | 178000 | +/-170 |
| 354 | 4.25 | 238 | 150000 | 300000 | +/-200 |
| 404 | 4.75 | 340 | 215000 | 430000 | +/-225 |
| 454 | 5.50 | 405 | 255000 | 510000 | +/-250 |
| 504 | 5.75 | 570 | 360000 | 720000 | +/-275 |
| 554 | 6.25 | 800 | 505000 | 1010000 | +/-300 |
| 604 | 6.75 | 920 | 640000 | 1290000 | +/-320 |
| 705 | 8.50 | 1840 | 1280000 | 2560000 | +/-270 |
| 805 | 9.50 | 2230 | 1780000 | 3560000 | +/-310 |
| 905 | 11.50 | 4130 | 2600000 | 5200000 | +/-400 |
KD42 Floating shaft
The KD42 floating shaft coupling uses two flexible half couplings mounted on a solid center shaft, simplifying installation or maintenance. the unitized disc packs, close tolerance bolts and safety overload washers provide superior performance and trouble-free near zero back-lash operation.
| Size | Coupling Rating (HP/100 RPM) | Torque Rating | Axial Capacity(in) | |
| Continuous(in-lb) | Peak(in-lb) | |||
| 204 | 57.1 | 36000 | 72000 | +/-1.50 |
| 254 | 82.5 | 52000 | 104000 | +/-1.50 |
| 304 | 141 | 89000 | 178000 | +/-1.50 |
| 354 | 238 | 150000 | 300000 | +/-1.50 |
| 404 | 340 | 215000 | 430000 | +/-1.50 |
| 454 | 405 | 255000 | 510000 | +/-1.50 |
| 504 | 570 | 360000 | 720000 | +/-2.00 |
| 554 | 800 | 505000 | 1010000 | +/-2.00 |