ATB Series AT Clutch
Replaceable Armature Faces Assure Minimum Downtime
ATB Brakes are completely assembled at the factory and have been specifically designed to match the torque ratings of standard motors, reducers, and other power transmission components. They feature a replaceable friction face. which has been designed to provide superior wear life with reduced engagment noise level wear and consistent torque capacity. Wear surfaces can, in many cases, be replaced without removing the unit from the shaft.
ATB Series AT Clutch
Product Data – Reference (Pages 82-91) in catalog P-1234
| Model Size | Bore Size | Voltage DC | Part No. |
| ATB-25 | 1/2″ | 6 | 5191-170-002 |
| ATB-25 | 1/2″ | 24 | 5191-170-010 |
| ATB-25 | 1/2″ | 90 | 5191-170-003 |
| ATB-25 | 5/8″ | 6 | 5191-170-004 |
| ATB-25 | 5/8″ | 24 | 5191-170-011 |
| ATB-25 | 5/8″ | 90 | 5191-170-005 |
| ATB-25 | 3/4″ | 6 | 5191-170-006 |
| ATB-25 | 3/4″ | 24 | 5191-170-012 |
| ATB-25 | 3/4″ | 90 | 5191-170-007 |
| ATB-25 | 7/8″ | 6 | 5191-170-008 |
| ATB-25 | 7/8″ | 24 | 5191-170-013 |
| ATB-25 | 7/8″ | 90 | 5191-170-009 |
| ATB-55 | 3/4″ | 6 | 5192-170-002 |
| ATB-55 | 3/4″ | 24 | 5192-170-010 |
| ATB-55 | 3/4″ | 90 | 5192-170-003 |
| ATB-55 | 7/8″ | 6 | 5192-170-004 |
| ATB-55 | 7/8″ | 24 | 5192-170-011 |
| ATB-55 | 7/8″ | 90 | 5192-170-005 |
| ATB-55 | 1″ | 6 | 5192-170-006 |
| ATB-55 | 1″ | 24 | 5192-170-012 |
| ATB-55 | 1″ | 90 | 5192-170-007 |
| ATB-55 | 1-1/8″ | 6 | 5192-170-008 |
| ATB-55 | 1-1/8″ | 24 | 5192-170-013 |
| ATB-55 | 1-1/8″ | 90 | 5192-170-009 |
| ATB-155 | 1-1/8″ | 6 | 5193-170-002 |
| ATB-115 | 1-1/8″ | 24 | 5193-170-010 |
| ATB-115 | 1-1/8″ | 90 | 5193-170-003 |
| ATB-115 | 1-1/4″ | 6 | 5193-170-004 |
| ATB-115 | 1-1/4″ | 24 | 5193-170-011 |
| ATB-115 | 1-1/4″ | 90 | 5193-170-005 |
| ATB-115 | 1-3/8″ | 6 | 5193-170-006 |
| ATB-115 | 1-3/8″ | 24 | 5193-170-012 |
| ATB-115 | 1-3/8″ | 90 | 5193-170-007 |
| ATB-115 | 1-1/2″ | 6 | 5193-170-008 |
| ATB-115 | 1-1/2″ | 24 | 5193-170-013 |
| ATB-115 | 1-1/2″ | 90 | 5193-170-009 |
Component Parts
| Description | PartNo. ATB-25 | PartNo.ATB-55 | PartNo.ATB-115 |
| Retainer | 748-0018 | 748-0727 | 748-0737 |
| Screw | 797-0321 | 797-0321 | 797-0321 |
| Plate | 686-0166 | 686-0162 | 686-0171 |
| WaveSpring | 808-0404 | 808-0401 | 808-0384 |
| Detent Ring | 748-2031 | 748-2038 | 748-2020 |
| Armature Hub | 540-0908 | 540-0851 | 540-0864 |
| Armature | 110-0220 | 110-0218 | 110-0223 |
| Facing Assembly | 5161-445-003 | 5162-445-003 | 5163-445-003 |
| Screw | 797-1389 | 797-1389 | 797-1389 |
| Screw | 797-1519 | 797-1462 | 797-1463 |
| Lockwasher | 950-0436 | 950-0355 | 950-0355 |
| Flatwasher | 950-0023 | 950-0023 | |
| Magnet Assembly-6volts DC | 5191-631-002 | 5192-631-002 | 5193-631-002 |
| Magnet Assembly 24volts DC | 5191-631-004 | 5192-631-004 | 5193-631-004 |
| Magnet Assembly 90volts DC | 5191-631-003 | 5192-631-003 | 5193-631-003 |
| Set screw | 797-1393 | 797-1386 | 797-1395 |
| Splined Hub | |||
| 1/2″Bore | 540-0901 | ||
| 5/8″Bore | 540-0902 | ||
| 3/4″Bore | 540-0903 | 540-1512 | |
| 7/8″Bore-1″Bore | 540-0904 | 540-1513 | 540-1514 |
| 1-1/8″Bore | 540-1515 | 540-0866 | |
| 1-1/4″Bore | 540-0867 | ||
| 1-3/8″Bore | 540-0868 | ||
| 1-1/2″Bore | 540-0869 | ||
| Ball Bearing | 166-0283 | 166-0277 | 166-0279 |
| Retainer Ring | 748-0018 | 748-0276 | 748-073 |
| Shim | 801-1035 | 801-1034 | 801-1036 |
| Backplate | 686-0167 | 686-0163 | 686-0172 |
| Screw | 797-1392 | 797-0437 | 797-0447 |
| Optional Accessory Items | |||
| Conduitbox | 5162-101-002 | 5162-101-002 | 5162-101-002 |
| TorqueArm | 5191-101-001 | 5192-101-001 | 5193-101-001 |
| Kit Items | |||
| Friction Face Replacement Kit | 5161-101-007 | 5162-101-007 | 5163-101-007 |
| Brake Rebuild Kit | 5191-101-006 | 5192-101-006 | 5193-101-006 |
Click on the links below to see Drawings and Specs: