• Rex MB2303S Spherical Roller Bearings ZB2000 Flange Block. Contact Rexnord for more details.

Dimensions

Overall Width (in)	8.44 in
Pilot Diameter (in)	7.375 in
Bore Diameter (in)	3.1875 in
Foot Height (in)	1 in
Bolt Size (in)	3/4 in
Housing Width (in)	8.44 in
Overall Height (in)	4.63 in
Overall Length (in)	8.44 in
Standoff Distance (in)	0.25 in
Locking Collar Outside Diameter (in)	4.91 in
Bolt Spacing (in)	6.72 in
Bolt Circle (in)	9.5 in
Length Through Bore (in)	4.38 in
Housing Cast Face to Outermost Bearing Face (in)	0.94 in
Inner Ring Outside Diameter (in)	3.975 in

Technical Specifications

Misalignment Type	Dynamic
Shaft Locking Type	Single Set Collar
Housing Construction	Solid
Radial Dynamic Load Capacity (lb)	84,330 lb
Seal Type	Heavy Contact Seal
Housing Style	Flange Block
Housing Type	Flange, Four Bolt, Pilot
Static Load Rating (lb)	90,700 lb
Radial Clearance	C3 STANDARD
End Cap	DTC10
Series	Flange Blocks
Fixed/Expansion	Fixed
Cage Material	Engineered Polymer
Product	ZB2000
Rolling Element	Spherical Roller
Housing Material	Cast Iron
Maximum Speed (RPM)	1400 rpm
Seal Kit	MS10
Setscrew Torque (in-lbs)	680 in/lbs
Microlock Kit	ML4
Ability to Relubricate	Yes
Available Seal Type	K Light Contact Lip Seal; M Spring Loaded Heavy Contact Lip Seal (Buna and Viton); Z Clearance Seal; G Triple Lip
Locking Device Kit	SC10
Max Operating Temperature (C)	107 °C
Vibration Frequency Outer Ring Defect	0.1383 cps
Vibration Frequency Fundamental Train	0.0073 cps
Grease Fitting Thread Size	1/8 NPT
Primary Seal	BUNA SPRING LOADED LIP SEAL
Max Operating Temperature (F)	225 °F
Lubricant	EXXON RONEX MP STD
Size Code	10
Misalignment Capability	±2.0° Misalignment - Dynamic
Vibration Frequency Roller Spin	0.0628 cps
Housing Coating	POWDER COATED
Insert	2303U
Vibration Frequency Inner Ring Defect	0.1784 cps

General Specifications

UPC	698210702298
Weight	35.50 LB
Packaged Length	9.50 IN
Packaged Width	4.50 IN
Packaged Height	9.25 IN
Country of Origin	Mexico