All Product Types > ENGINEERED BEARINGS > Mounted Bearings > Self-Aligning Mounted Tapered Roller Bearings > Single Collar - Self-Aligning Tapered Roller Bearing Pillow Block: 2-Bolt Base Mounted Bearings > Part Number SNSA-P2BA-TRB-45MME  

Part Number SNSA-P2BA-TRB-45MME, Single Collar - Self-Aligning Tapered Roller Bearing Pillow Block: 2-Bolt Base Mounted Bearings

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Timken® Self-Aligning Tapered Roller Bearing Mounted Bearings are designed for applications from aggregate and steel to mining and power generation. The heavy duty housing and cartridge are made from cast steel to stand up to the harshest conditions, and are designed to accept +/-4 degrees of misalignment.. Metric sizes also are available in shaft diameters ranging from 35 mm to 125 mm.

Open and Closed end covers available for purchase.




Specifications  · Dimensions  · Radial and Thrust Factors; Speed and Slip-Fit Load Limits  · Note

Specifications

Shaft Size
45 mm

Shaft Size Type
Metric

Lubrication
Grease - Premium Industrial

Housing Type
SN Self-Aligning

Housing Coating
Powder Coat


Dimensions

Dimension B 
75 mm
2-61/64 in

Dimension S1
44.5 mm
1-3/4 in

Dimension R
30.5 mm
1-13/64 in

Dimension L 
209.6 mm
8-1/4 in

Dimension E
76.7 mm
3-1/64 in

Dimension A 
64.3 mm
2-17/32 in

Dimension J Min. 
165.1 mm
6-1/2 in

Dimension J Max. 
177.8 mm
7 in

Bolt Diameter 
12 mm
1/2 in

Dimension N 
14.3 mm
9/16 in

Dimension N1 
20.6 mm
13/16 in

Dimension H1 
24.6 mm
31/32 in

Dimension H2 
128.6 mm
5-1/16 in

Dimension d1 
87.3 mm
3-7/16 in

Dimension H 
59.9 mm
2-23/64 in

Dimension W 
141.3 mm
5-9/16 in

EXPANSION
14.2 mm
9/16 in
1 Permissible axial displacement from normal position of one bearing ring in relation to the other.


Radial and Thrust Factors; Speed and Slip-Fit Load Limits

e
0.33

X (if Fa/Fr ≤ e)
0.87

Y (if Fa/Fr ≤ e)
2.64

X (if Fa/Fr > e)
0.7

Y (if Fa/Fr > e)
3.18

K Factor
1.83

C90 Dynamic Load Rating1
10300 lbf

C0 Static Load Rating
43000 lbf

Fa-max Maximum Permissible Thrust Load2
2590 lbf

Fr-max Maximum Allowable Slip Fit Radial Load3
8400 lbf

Max. Speed4
3050 rpm
1 C90 is the Dynamic Load Rating based on a rated Life of 90 million revolutions (3000 hrs at 500 RPM).
2 Fa-max is based on the limits of the holding force of two properly tightened collars and set screws. Fifty percent of the values should be used when a single collar is installed.
3 If the application loads approach or exceed Fr-max, the shaft fit should be adjusted to a line-to-line (g6 or h6) or light press fit (m6).
4 Timken Double Lip Seal


Note

Note: All units have a 1/8" pipe thread grease fitting

The Maximum Permissible Thrust Load applies to conditions of slip fit with set screw mounting or in applications where a large moment loading occurs. The values shown are valid only when two collars and set screws are used.

When heavy thrust forces are applied, the friction between the pillow block base may not be sufficient to prevent movement. Mechanical stops or shear bars with strength sufficient to support the load should be added. Never weld the pillow block or bearing to secure it to the shaft or base.