LOCKRING – MS51990-( ) TYPE
| L OCK RING PART NUMB ER | A DIA +.005 -.004 | B ±.005 | C DIA ±.005 | D DIA +.004 -.003 | E REF | F | G RAD ±.005 | |
| (1117) (MATERIAL ) | (A286) (MATERIAL ) | |||||||
| RL RR1816SB 5 | RL RR1816SU5 | .308 | .084 | .255 | .161 | 10 | 14 | .135 |
| RL RR2118SB 6 | RL RR2118SU6 | .354 | .099 | .298 | .189 | 12 | 16 | .159 |
| RL RR2421SB 6 | RL RR2421SU6 | .399 | .099 | .343 | .213 | 12 | 13 | .180 |
| RL RR2824SB 7 | RL RR2824SU7 | .468 | .112 | .400 | .266 | 14 | 17 | .214 |
| RL RR3128SB 8 | RL RR3128SU8 | .514 | .138 | .452 | .323 | 16 | 20 | .236 |
| RL RR3331SB 9 | RL RR3331SU9 | .545 | .145 | .480 | .375 | 18 | 23 | .252 |
| RL RR3833SB 9 | RL RR3833SU9 | .624 | .145 | .560 | .390 | 20 | 24 | .293 |
| RL RR4738SB 9 | RL RR4738SU9 | .767 | .145 | .702 | .468 | 22 | 26 | .362 |
| RL RR5647SB 10 | RL RR5647SU10 | .910 | .161 | .837 | .574 | 24 | 26 | .431 |
| RL RR6456SB 11 | RL RR6456SU11 | 1.040 | .176 | .958 | .695 | 20 | 30 | .492 |
| RL RR7264SB 11 | RL RR7264SU11 | 1.170 | .176 | 1.078 | .795 | 22 | 30 | .551 |
| RL RR8272SB 11 | RL RR8272SU11 | 1.326 | .176 | 1.232 | .908 | 20 | 38 | .636 |
| RL RR9082SB 12 | RL RR9082SU12 | 1.456 | .193 | 1.371 | 1.035 | 20 | 36 | .692 |
| RL RR10090SB 12 | RL RR10090SU12 | 1.611 | .193 | 1.509 | 1.189 | 16 | 48 | .770 |
| RL RR124100SB 12 | RL RR124100SU12 | 1.987 | .193 | 1.885 | 1.282 | 22 | 42 | .957 |
NOTES: UNLESS OTHERWISE SPECIFIED
[1] MATERIAL: SB – 1117 steel per ASTM 108.SU – A286 Cres
per AMS5731 or AMS5734. NOTE: These lockrings are available in other materials. Refer to page 27.
[2] FINISH: SB – Cadmium plate per QQ-P-416, Type II, CL3.SU – Passivate per QQ-P-35.
[3] HARDNESS: SB – Case hardened to 36—45 HRC SU – Hardened to 269 HB min.
DESIGN DATA, LOCKRING – MS51990-( ) TYPE
| L OCK RING PART NUMB ER | A DIA ±.005 | B DIA ±.005 | C ±.005 | D DIA ±.005 | E | F | |
| (117) (MATERIAL ) | (A286) (MATERIAL ) | ||||||
| RL 21SB 4 | RL 21SU4 | .354 | .213 | .068 | .298 | 24 | 13 |
| RL 24SB 5 | RL 24SU5 | .399 | .266 | .081 | .343 | 24 | 17 |
| RL 28SB 5 | RL 28SU5 | .468 | .323 | .081 | .400 | 26 | 20 |
| RL 28SB 6 | RL 28SU6 | .468 | .323 | .099 | .400 | 26 | 20 |
| RL 31SB 6 | RL 31SU6 | .514 | .375 | .099 | .452 | 30 | 23 |
| RL 33SB 6 | RL 33SU6 | .545 | .390 | .099 | .480 | 34 | 24 |
| RL 33SB 7 | RL 33SU7 | .545 | .390 | .115 | .480 | 34 | 24 |
| RL 38SB 7 | RL 38SU7 | .624 | .468 | .115 | .560 | 36 | 26 |
| RL 43SB 7 | RL 43SU7 | .699 | .520 | .115 | .636 | 36 | 26 |
| RL 47SB 8 | RL 47SU8 | .767 | .574 | .130 | .702 | 40 | 26 |
| RL 56SB 8 | RL 56SU8 | .910 | .695 | .130 | .837 | 44 | 30 |
| RL 64SB 8 | RL 64SU8 | 1.040 | .795 | .138 | .958 | 38 | 30 |
| RL 72SB 8 | RL 72SU8 | 1.170 | .908 | .130 | 1.078 | 40 | 38 |
NOTES: UNLESS OTHERWISE SPECIFIED
[1] MATERIAL: SB-1117 Steel per ASTM A108.SU – A286 Cres per AMS5731 or AMS5734. NOTE: These parts are available in other materials. Refer to page 27.
[2] FINISH: SB – Cadmium plate per QQ-P-416, Type II, CL 3.SU – Passivate per QQ-P-35.
[3] HARDNESS: SB – Case hardened to 36-45 HRC.SU – Hardened to 269 HB min.
LOCKRING – OVERSIZE REPLACEMENT
| B ASIC L OCK RING PART NUMB ER | CB ORE DIA +.003 -.000 [2] | R MIN | |
| AL UM | MAG | ||
| RL 21 | .328 | .337 | .22 |
| RL 24 | .375 | .381 | .25 |
| RL 28 | .437 | .448 | .31 |
| RL 31 | .484 | .495 | .34 |
| RL 33 | .515 | .526 | .36 |
| RL 38 | .593 | .601 | .42 |
| RL 43 | .671 | .675 | .47 |
| RL 47 | .734 | .747 | .50 |
| RL 56 | .875 | .888 | .62 |
| RL 64 | 1.000 | 1.015 | .69 |
| RL 72 | 1.125 | 1.139 | .75 |
NOTES: UNLESS OTHERWISE SPECIFIED
1. The minimum boss radius (R) shown is the minimum dimension applicable for lockring installation into either aluminum or magnesium parent
[2] The magnesium counterbore diameters are to be used for application in either magnesium or steel bosses (except for Hydraulic Inserts “RJ1700” series which requires the aluminum counterbore to prevent O-ring from extruding under pressure) refer to page 55.