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Rex MA2108 1-1/2 in (38.1 mm) bore mounted spherical roller bearing, 2000 series normal duty, cast iron fixed 2-bolt pillow block housing, single setscrew locking collar, spring-loaded heavy contact lip seal (M-seal).
MODEL 10439000
Contact supplier for technical support on: 800-626-2120
$487.88 Each
Prices are subject to change
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Typically Ships in: 1 day
Returnable: See conditions
Ability to Relubricate
Yes
Available end cap
DTC4
Available End Cap
DTC4
Available Seal Type
K Light Contact Lip Seal; M Spring Loaded Heavy Contact Lip Seal (Buna and Viton); Z Clearance Seal; G Triple Lip
Base Length (in)
6.56
Base to centerline height (in)
1.875
Base Width (in)
2.25
Bearing Brand
REX ROLLER BEARING
Bearing housing
Pillow block 2 bolt RB
Bearing housing material
Cast iron
Bearing Type
Spherical roller brg
Bolt Size (in)
1/2
Bore Size (in)
1.5 in
C dynamic load rating
19860 lb
Cage Material
Engineered Polymer
Clearance
C3 STANDARD
Co static load rating
20900 lb
Distance between bolt holes (in)
5
Fixed expansion
Fixed
Fixed vs. Expansion
Fixed
Foot Height (in)
1.19
Grease fitting size
1/8 NPT
Grease Fitting Thread Size
1/8 NPT
Height
2.25
Housing Cast Face to Outermost Bearing Face (in)
0.69
Housing coating
Powder coated
Housing Coating
POWDER COATED
Housing Color
Black
Housing Construction
Solid
Housing Material
Cast Iron
Housing Style
Pillow Block
Housing Type
Pillow Block, Two Bolt
Inner Ring Outside Diameter (in)
1.745
Insert
2108U
Length
5.75
Length Through Bore (in)
2.88
Locking collar outside diameter (in)
2.31
Locking device kit
SC4
Locking Device Kit
SC4
Locking Type
Single Set Collar
Lubrication type
EXXON RONEX MP STD
Lubrication Type
EXXON RONEX MP STD
Max Speed
3300 rpm
Maximum Speed (RPM)
3300 rpm
Maximum Temperature (C)
107
Maximum Temperature (F)
225
Microlock kit
ML2
Misalignment Capability
±2.0° Misalignment - Dynamic
Misalignment Type
Dynamic
Mounted clearance
C3 standard
Net Weight
5.90
Overall Length (in)
6.56
Overall width
2.88
Primary seal
Buna spring loaded lip seal
Primary Seal
BUNA SPRING LOADED LIP SEAL
Radial Dynamic Load Capacity (lb)
19860 lb
Radial Static Load Capacity (lb)
20900 lb
Retainer Material
Engineered Polymer
Retainer type
Engineered polymer
Seal kit
MS4
Seal type
Heavy Contact Seal
Series
Solid-housed Pillow Blocks
Service instructions
BR3-001 REX 2, 3, 5, 6, 9000
Setscrew torque (in-lbs)
325
Shaft locking
Single set collar
Size Code
4
Size code
4
Slot Length (in)
0.81
Threaded cover kit
TC4
Unit of dimension
in
Unit of Dimension
IN
Vibration frequency fundamental train
0.0070 cps
Vibration Frequency Fundamental Train
0.0070 cps
Vibration frequency inner ring defect
0.1445 cps
Vibration Frequency Inner Ring Defect
0.1445 cps
Vibration frequency outer ring defect
0.1055 cps
Vibration Frequency Outer Ring Defect
0.1055 cps
Vibration frequency roller spin
0.0499 cps
Vibration Frequency Roller Spin
0.0499 cps
Volume
0.322
Volume unit
GLL
Volume Unit
GLL
Weight unit
LB
Width
5.75
1 1/2" Mounted Spherical Roller Bearing, Cast Iron Fixed 2-Bolt Pillow Block, Single Setscrew Locking Collar, Spring Loaded Heavy Contact Seal
How do I choose the right type of bearing for my application?
Start with the load and how it’s applied. You need to know if you’re dealing with radial loads, axial loads, or a mix of both. Then look at speed, operating environment, and space constraints. For example, ball bearings are great for high speed and lighter loads, while roller bearings handle heavier loads but usually at lower speeds. If there’s contamination, moisture, or heat involved, you may need sealed bearings or specific materials. In most cases, the right choice comes down to matching load type, speed, and environment to the bearing design.
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