Spring Pad Option - For Dynamic Preload

Part Number Old Part Number Description Use with Bearing Part No. Use with Bearing Old No. Free Height A Recommended Installed Solid Height Spring Load at Solid Height Width
B
Length
C
D E Mounting Dimensions S.H.C.S.
Size
K
S.H.C.S.
Size
J**
Height  Spring Load F G H L
R987144775 21905 #4 SPRING PAD R987144779 21050 0.408 0.390 200 lb 0.375 370 lb 0.84 2.62 2.00 0.16 2.3125 - - 0.42 No.8 #4-40
0.398 0.385 250 lb .62" long
R987144812 21910 #6 SPRING PAD ASSEMBLY R987144824 21100 0.480 0.454 400 lb 0.437 600 lb 0.97 3.75 2.50 0.16 3.4375 - - 0.48 No.8 #4-40
0.470 0.447 500 lb .75" long
R987144853 21915 #9 SPRING PAD ASSEMBLY R987144863 21150 0.539 0.517 800 lb 0.500 1500 lb 1.47 4.75 3.25 0.16 4.4375 0.234 1.000 - No.8 #8-32
0.529 0.510 1060 lb 1.00" long
R987144715 21920 #12 SPRING PAD ASSEMBLY R987144726 21200 0.665 0.641 1600 lb 0.625 2700 lb 1.97 6.25 4.50 0.19 5.875 0.172 1.625 - No.10 #10-32
0.655 0.635 2000 lb 1.50" long
R987144736 21925 #18 SPRING PAD R987144874 21250 0.868 0.832 3600 lb 0.812 5050 lb 2.97 8.75 6.50 0.31 8.125 0.266 2.437 - 0.25 .25-20
0.858 0.822 4500 lb 2.00" long
* CAUTION - Do not use spring pad if the working load on the spring-mounted bearing exceeds installed spring load indicated above.
** Use only screw length J for fastening bearings to spring pad. Do not use longer screws.