2
Suggested Fitting Practice
Bearing Rating
Assembly
P/N
NP954426-902A1
NP932743-902A1
NP101986-902A1
NP195121-902A1
(lbf)
(Newtons)
(lbf)
(Newtons)
(lbf)
(Newtons)
(lbf)
(Newtons)
C
90(1)
25,600
114,000
35,700
159,000
34,200
152,000
45,200
201,000
Ca
90(1)
14,000
62,100
20,300
90,500
21,000
93,500
23,800
106,000
C
90(2)
44,500
198,000
62,200
277,000
59,500
265,000
78,700
350,000
Co
(2)
364,000 1,622,000 428,000
1,902,000
590,000
2,620,000
888,000
3,940,000
Assembly P/N:
NP954426-902A1
NP932743- 902A1
NP101986- 902A1
NP195121- 902A1
Assembly Bore:
8 in.
10 in.
12 in.
14 in.
Bearing K- Factor:
1.83
1.76
1.63
1.90
Seal O.D. Under
Snap Ring
10.358 in.
13.154 in.
14.967 in.
16.957 in.
Assembly Bench
Endplay (BEP):
0.015 in. to 0.020 in. 0.024 in. to 0.029 in. 0.023 in. to 0.028 in. 0.022 in. to 0.027 in.
Approximate
Assembly Weight:
40 lbs
60 lbs
70 lbs
105 lbs
Intended
Application:
Crown/Travelling
Block
Crown/Travelling
Block
Crown/Travelling
Block
Crown/Travelling
Block
Max. Suggested
Operating Speed:
175 RPM
275 RPM
300 RPM
300 RPM
Assembly
P/N
NP954426-902A1 NP932743-902A1 NP101986-902A1
NP195121-902A1
(in.)
(mm)
(in.)
(mm)
(in.)
(mm)
(in.)
(mm)
Bearing
Bore
Minimum
8.0000
203.200
9.9990
253.975 12.0000 304.800 14.0000 355.600
Maximum
8.0010
203.225 10.0000 254.000 12.0010 304.825 14.0020 355.651
Pin
Diameter
Minimum
7.9960
203.098
9.9960
253.898 11.9960 304.698 13.9950 355.473
Maximum
7.9980
203.149
9.9980
253.949 11.9980 304.749 13.9990 355.600
Corresponding
Fits
Minimum
0.0020L
0.051L
0.0040L
0.102L
0.0050L
0.127L
0.0070L
0.178L
Maximum
0.0050L
0.127L
0.0010L
0.025L
0.0020L
0.051L
0.0001L
0.025L
Bearing
O.D.
Minimum
10.8750 276.225 13.6875 347.663 15.5000 393.700 17.5000 444.500
Maximum
10.8760 276.250 13.6895 347.713 15.5020 393.751 17.5020 444.551
Sheave
Bore
Minimum
10.8710 276.123 13.6835 347.561 15.4960 393.598 17.4960 444.398
Maximum
10.8730 276.174 13.6855 347.612 15.4980 393.649 17.4980 444.449
Corresponding
Fits
Minimum
0.0020T 0.051T 0.0020T 0.051T 0.0020T 0.051T 0.0020T 0.051T
Maximum
0.0050T 0.127T 0.0060T 0.152T 0.0060T 0.152T 0.0060T 0.152T
Resulting
Installation
Force Through
the Cup (lbf)
(1)
Minimum
7,500
6,500
7,500
9,700
Maximum
19,000
20,000
25,000
30,000
(1)
These values may vary depending on actual fitting practice and condition of the sheave bore.
BEARING ASSEMBLY CHARACTERISTICS
