Inverted External Retaining Rings
For a smooth profile and better clearance than standard external retaining rings, the lugs on these rings point inward. Open them with retaining ring pliers (sold separately), pass them over the end of a shaft, and release to spring into the groove. Ring ID is measured with the ring uninstalled. The black-phosphate finish is mildly corrosion resistant in dry environments.
Thrust load capacity, also known as PR, is based on using a shaft that is harder than the ring.
Metric rings meet DIN 471 specifications for retaining ring grooves.
For technical drawings and 3-D models, click on a part number.
Inch
For Groove | Ring | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| For OD | Dia. | Wd. | ID | Thick. | Min. Hardness | Thrust Load Capacity, lbs. | Magnetic Properties | Specifications Met | Pkg. Qty. | Pkg. | |
Black-Phosphate 1060-1090 Spring Steel | |||||||||||
| 1/2" | 0.468" | 0.039" | 0.461" | 0.035" | Rockwell C47 | 1,110 | Magnetic | ASME B18.27.4 | 50 | 000000000 | 00000 |
| 5/8" | 0.588" | 0.039" | 0.579" | 0.035" | Rockwell C47 | 1,420 | Magnetic | ASME B18.27.4 | 50 | 000000000 | 0000 |
| 3/4" | 0.704" | 0.046" | 0.693" | 0.042" | Rockwell C47 | 2,530 | Magnetic | ASME B18.27.4 | 50 | 000000000 | 00000 |
| 7/8" | 0.821" | 0.046" | 0.81" | 0.042" | Rockwell C47 | 2,890 | Magnetic | ASME B18.27.4 | 50 | 000000000 | 00000 |
| 1" | 0.94" | 0.046" | 0.925" | 0.042" | Rockwell C47 | 3,350 | Magnetic | ASME B18.27.4 | 50 | 000000000 | 00000 |
| 1 1/16" | 0.998" | 0.056" | 0.982" | 0.05" | Rockwell C47 | 4,210 | Magnetic | ASME B18.27.4 | 25 | 000000000 | 0000 |
| 1 1/8" | 1.059" | 0.056" | 1.041" | 0.05" | Rockwell C47 | 4,460 | Magnetic | ASME B18.27.4 | 25 | 000000000 | 00000 |
| 1 3/16" | 1.118" | 0.056" | 1.098" | 0.05" | Rockwell C47 | 4,720 | Magnetic | ASME B18.27.4 | 25 | 000000000 | 00000 |
| 1 1/4" | 1.176" | 0.056" | 1.156" | 0.05" | Rockwell C47 | 4,970 | Magnetic | ASME B18.27.4 | 25 | 000000000 | 00000 |
| 1 5/16" | 1.232" | 0.056" | 1.214" | 0.05" | Rockwell C47 | 5,220 | Magnetic | ASME B18.27.4 | 25 | 000000000 | 00000 |
| 1 3/8" | 1.291" | 0.056" | 1.272" | 0.05" | Rockwell C47 | 5,480 | Magnetic | ASME B18.27.4 | 25 | 000000000 | 00000 |
| 1 7/16" | 1.35" | 0.056" | 1.333" | 0.05" | Rockwell C47 | 5,730 | Magnetic | ASME B18.27.4 | 25 | 000000000 | 00000 |
| 1 1/2" | 1.406" | 0.056" | 1.387" | 0.05" | Rockwell C47 | 5,930 | Magnetic | ASME B18.27.4 | 10 | 000000000 | 0000 |
| 1 9/16" | 1.468" | 0.068" | 1.446" | 0.062" | Rockwell C47 | 7,710 | Magnetic | ASME B18.27.4 | 10 | 000000000 | 0000 |
| 1 5/8" | 1.529" | 0.068" | 1.503" | 0.062" | Rockwell C47 | 8,010 | Magnetic | ASME B18.27.4 | 10 | 000000000 | 0000 |
| 1 25/32" | 1.669" | 0.068" | 1.637" | 0.062" | Rockwell C47 | 8,620 | Magnetic | ASME B18.27.4 | 10 | 000000000 | 0000 |
| 1 13/16" | 1.708" | 0.068" | 1.675" | 0.062" | Rockwell C47 | 8,980 | Magnetic | ASME B18.27.4 | 10 | 000000000 | 0000 |
| 1 31/32" | 1.857" | 0.068" | 1.819" | 0.062" | Rockwell C47 | 9,690 | Magnetic | ASME B18.27.4 | 10 | 000000000 | 0000 |
| 2" | 1.886" | 0.068" | 1.85" | 0.062" | Rockwell C47 | 9,890 | Magnetic | ASME B18.27.4 | 5 | 000000000 | 0000 |
| 2 1/2" | 2.36" | 0.086" | 2.313" | 0.078" | Rockwell C47 | 15,500 | Magnetic | ASME B18.27.4 | 1 | 000000000 | 0000 |
| 3 1/2" | 3.316" | 0.12" | 3.237" | 0.109" | Rockwell C45 | 30,300 | Magnetic | ASME B18.27.4 | 1 | 000000000 | 0000 |
| 4" | 3.792" | 0.12" | 3.7" | 0.109" | Rockwell C45 | 34,200 | Magnetic | ASME B18.27.4 | 1 | 000000000 | 0000 |
Metric
For Groove | Ring | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| For OD, mm | Dia., mm | Wd., mm | ID, mm | Thick., mm | Min. Hardness | Thrust Load Capacity, lbs. | Magnetic Properties | Specifications Met | Pkg. Qty. | Pkg. | |
Black-Phosphate 1060 Carbon Steel | |||||||||||
| 12 | 11.5 | 1.1 | 11 | 1 | Rockwell C47 | 1,010 | Magnetic | DIN 471 | 50 | 000000000 | 000000 |
| 13 | 12.4 | 1.1 | 11.9 | 1 | Rockwell C47 | 1,230 | Magnetic | DIN 471 | 50 | 000000000 | 00000 |
| 14 | 13.4 | 1.1 | 12.9 | 1 | Rockwell C47 | 1,340 | Magnetic | DIN 471 | 50 | 000000000 | 00000 |
| 15 | 14.3 | 1.1 | 13.8 | 1 | Rockwell C47 | 1,460 | Magnetic | DIN 471 | 50 | 000000000 | 00000 |
| 16 | 15.2 | 1.1 | 14.7 | 1 | Rockwell C47 | 1,570 | Magnetic | DIN 471 | 25 | 000000000 | 0000 |
| 17 | 16.2 | 1.1 | 15.7 | 1 | Rockwell C47 | 1,820 | Magnetic | DIN 471 | 25 | 000000000 | 0000 |
| 18 | 17 | 1.3 | 16.5 | 1.2 | Rockwell C47 | 3,320 | Magnetic | DIN 471 | 25 | 000000000 | 00000 |
| 20 | 19 | 1.3 | 18.5 | 1.2 | Rockwell C47 | 3,280 | Magnetic | DIN 471 | 25 | 000000000 | 00000 |
| 22 | 21 | 1.3 | 20.5 | 1.2 | Rockwell C47 | 3,190 | Magnetic | DIN 471 | 10 | 000000000 | 0000 |
| 23 | 22 | 1.3 | 21.5 | 1.2 | Rockwell C47 | 3,140 | Magnetic | DIN 471 | 10 | 000000000 | 0000 |
| 24 | 22.9 | 1.3 | 22.2 | 1.2 | Rockwell C47 | 3,140 | Magnetic | DIN 471 | 10 | 000000000 | 0000 |
| 25 | 23.9 | 1.3 | 23.2 | 1.2 | Rockwell C47 | 3,160 | Magnetic | DIN 471 | 10 | 000000000 | 0000 |
| 26 | 24.9 | 1.3 | 24.2 | 1.2 | Rockwell C47 | 3,160 | Magnetic | DIN 471 | 10 | 000000000 | 0000 |
| 30 | 28.6 | 1.6 | 27.9 | 1.5 | Rockwell C47 | 6,180 | Magnetic | DIN 471 | 10 | 000000000 | 00000 |
| 32 | 30.3 | 1.6 | 29.6 | 1.5 | Rockwell C47 | 6,060 | Magnetic | DIN 471 | 10 | 000000000 | 00000 |
| 35 | 33 | 1.6 | 32.2 | 1.5 | Rockwell C47 | 5,970 | Magnetic | DIN 471 | 10 | 000000000 | 00000 |
| 38 | 35.8 | 1.85 | 34.5 | 1.75 | Rockwell C47 | 9,440 | Magnetic | DIN 471 | 10 | 000000000 | 00000 |