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Part Number MM9311WI 3H QUH
Part Number MM9311WI 3H QUH, Fafnir® Single Row Imperial Ball Screw Support Bearings (MM9-H)
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Timken® angular contact ball bearings are designed for combination radial and axial loading. Single-row bearings have high thrust capacity in one direction. Some single-row bearings are specifically designed for duplex mounting in sets for maximum performance.
Specifications
·
Dimensions
·
Basic Load Ratings
·
Factors
·
Abutment and Fillet Dimensions
Specifications
Rows per Set
Quadruplex
Design Units
Metric
d - Bore
44.5
mm
Ball Type
STEEL
Cage Type
CR - Phenolic Outer Land Riding Cage
Manufacturing Part Number
MM9311WI 3HQUH
Dimensions
D - Outer Diameter
76.2
mm
3
in
Bearing Width
15.88
mm
0.625
in
Total Width
63.52
mm
2.5000
in
Contact Angle
60
º
Basic Load Ratings
C0 - Static Radial Rating (per row)
50700
N
11400
lbf
Ce - Dynamic Radial Rating (per row)
1
38500
N
8650
lbf
C1 ISO - Dynamic Radial Rating (per row)
34700
N
7800
lbf
1
Based on 10
6
revolutions of calculated fatigue life.
Factors
Limiting Speed (Grease) (per row)
2100
rpm
Limiting Speed (Oil) (per row)
4200
rpm
Abutment and Fillet Dimensions
R - Inner Ring "To Clear" Radius
1
0.8
mm
0.031
in
r - Outer Ring "To Clear" Radius
2
0.800
mm
0.031
in
da - Inner Ring Backing Diameter
59.441
mm
2.3402
in
Da - Outer Ring Backing Diameter
60.569
mm
2.3846
in
1
Maximum housing fillet radius that bearing corners will clear.
2
Maximum shaft fillet radius that bearing corners will clear.
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