• Rex MB2303 Spherical Roller Bearings ZB2000 Flange Block. Contact Rexnord for more details.

Dimensions

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

Technical Specifications

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

General Specifications

UPC	698210701970
Weight	37.00 LB
Packaged Length	9.50 IN
Packaged Width	4.50 IN
Packaged Height	9.25 IN
HTC	8483204080