RG
| RING NO. | Remarks | Ds DEC FROM | TO | Ds | Ds mm | Df | T | R Ref. | SRef. | Weight Per 1000 Pcs. lbs. | L2 | THRUST LOAD Allow- ableload (lbs.) P'r | RPM LIMITS Standard Material |
| RG-9 | RG-9 | 0.092 | 0.096 | 3/32 | 2.4 | 0.089 | 0.025 | 0.040 | 0.045 | 0.14 | 0.30 | 8 | OVER 80,000 |
| RG-12 | RG-12 | 0.123 | 0.127 | 1/8 | 3.2 | 0.119 | 0.025 | 0.040 | 0.054 | 0.19 | 0.34 | 10 | OVER 80,000 |
| RG-15 | RG-15 | 0.154 | 0.158 | 5/32 | 4.0 | 0.149 | 0.025 | 0.040 | 0.078 | 0.27 | 0.38 | 13 | OVER 80,000 |
| RG-18 | RG-18 | 0.185 | 0.189 | 3/16 | 4.8 | 0.179 | 0.035 | 0.048 | 0.085 | 0.45 | 0.44 | 18 | OVER 80,000 |
| RG-25 | RG-25 | 0.248 | 0.252 | 1/4 | 6.3 | 0.238 | 0.035 | 0.048 | 0.100 | 0.74 | 0.54 | 22 | OVER 80,000 |
| RG-31 | RG-31 | 0.310 | 0.316 | 5/16 | 7.9 | 0.298 | 0.042 | 0.052 | 0.114 | 1.1 | 0.66 | 32 | OVER 80,000 |
| RG-37 | RG-37 | 0.373 | 0.379 | 3/8 | 9.5 | 0.356 | 0.042 | 0.052 | 0.130 | 1.5 | 0.76 | 42 | OVER 80,000 |
