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Rex ZB2311 is a 2000 series normal duty round flange cartridge bearing with a 3-11/16 in (93.66 mm) bore. The cast iron housing is fixed (non-expansion) and features a single set screw locking collar and a standard clearance seal. This unit is designed for applications requiring a compact, rigid mounting with spherical roller bearing self-alignment.
MODEL 10437255
Contact supplier for technical support on: 800-626-2120
$2,658.71 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
DTC11
Available End Cap
DTC11
Available Seal Type
K Light Contact Lip Seal; M Spring Loaded Heavy Contact Lip Seal (Buna and Viton); Z Clearance Seal; G Triple Lip
Bearing Brand
REX ROLLER BEARING
Bearing housing
FLANGE BLOCK 4 BOLT SQUARE RB
Bearing housing material
Cast iron
Bearing Type
Spherical roller brg
Bolt circle radius (in)
5 3/8 in
Bolt Circle Radius (in)
5 3/8 in
Bolt hole circle diameter (in)
10 3/4 in
Bolt Hole Circle Diameter (in)
10 3/4 in
Bolt Size (in)
3.6875 in
Bore length (in)
5 1/16 in
Bore Length (in)
5 1/16 in
Bore Size (in)
3.6875 in
C dynamic load rating
130970 lb
Cage Material
Engineered Polymer
Clearance
C3 STANDARD
Co static load rating
137000 lb
Distance between bolt holes (in)
7 19/32 in
Distance Between Bolt Holes (in)
7 19/32 in
Distance from housing cast face to inner ring long hub face (in)
1 1/32 in
Distance from Housing Cast Face to Inner Ring Long Hub Face (in)
1 1/32 in
Fixed expansion
Fixed
Fixed vs. Expansion
Fixed
Foot Height (in)
1.13
Grease fitting size
1/8 NPT
Grease Fitting Thread Size
1/8 NPT
Height
6.25
Housing Cast Face to Outermost Bearing Face (in)
1.03
Housing coating
Powder coated
Housing Coating
POWDER COATED
Housing Construction
Solid
Housing Material
Cast Iron
Housing Style
Flange Block
Housing Type
Flange, Four Bolt
Housing width (in)
9 3/4 in
Housing Width (in)
9 3/4 in
Inner ring hub diameter (in)
4 9/16 in
Inner Ring Hub Diameter (in)
4 9/16 in
Inner Ring Outside Diameter (in)
4.561
Insert
2311U
Length
9.69
Length Through Bore (in)
5.06
Locking collar outside diameter (in)
5 5/8 in
Locking Collar Outside Diameter (in)
5 5/8 in
Locking device kit
SC11
Locking Device Kit
SC11
Locking Type
Single Set Collar
Lubrication type
EXXON RONEX MP STD
Lubrication Type
EXXON RONEX MP STD
Max Speed
2050 RPM
Max temperature (°F (°C))
225 (107) F (C)
Maximum Speed (RPM)
2050 rpm
Maximum Temperature (C)
107 C
Maximum Temperature (F)
225 F
Microlock kit
ML4
Microlock Kit
ML4
Misalignment Capability
±2.0° Misalignment - Dynamic
Misalignment Type
Dynamic
Mounted clearance
C3 standard
Mounting bolt size (in)
7/8 in
Mounting Bolt Size (in)
7/8 in
Mounting pad height (in)
1 3/16 in
Mounting Pad Height (in)
1 3/16 in
Net Weight
59.00
Overall Length (in)
9.75
Overall width
9.75
Primary seal
Steel clearance seal
Primary Seal
STEEL CLEARANCE SEAL
Radial Dynamic Load Capacity (lb)
130970 lb
Radial Static Load Capacity (lb)
137000 lb
Retainer Material
Engineered Polymer
Retainer type
Engineered polymer
Seal kit
ZS11
Seal Kit
ZS11
Seal Type
Labyrinth Seal
Service instructions
BR3-001 REX 2, 3, 5, 6, 9000
Setscrew torque (in-lbs)
1350 in/lbs
Setscrew Torque (in-lbs)
1350 in/lbs
Shaft diameter (in)
3 11/16 in
Shaft locking
Single set collar
Size code
11
Size Code
11
Standoff distance (in)
1/4 in
Standoff Distance (in)
1/4 in
Threaded cover kit
TC11
Type of seal
Clearance seal
Unit of dimension
in
Unit of Dimension
IN
Vibration frequency fundamental train
0.0071 cps
Vibration Frequency Fundamental Train
0.0071 cps
Vibration frequency inner ring defect
0.1717 cps
Vibration Frequency Inner Ring Defect
0.1717 cps
Vibration frequency outer ring defect
0.1283 cps
Vibration Frequency Outer Ring Defect
0.1283 cps
Vibration frequency roller spin
0.0548 cps
Vibration Frequency Roller Spin
0.0548 cps
Volume
2.539
Volume unit
GLL
Volume Unit
GLL
Weight unit
LB
Width
9.69
3 11/16" Mounted Spherical Roller Bearing, Fixed Cast Iron 4-Bolt Square Flange Block, Single Setscrew Locking Collar, Clearance Seal
SKU: 1303956
Great service-fast shipping
Awesome service. I would highly recommend doing business with MRO! Price was cheapest anywhere
Read moreHow 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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SKU: 1303956
Great service-fast shipping
Awesome service. I would highly recommend doing business with MRO! Price was cheapest anywhere
Read more