• Rex MB2311GR48 Spherical Roller Bearings ZB2000 Flange Block. Contact Rexnord for more details.

Dimensions

Bore Diameter (in)	3.6875 in
Overall Length (in)	9.75 in
Overall Width (in)	9.75 in
Foot Height (in)	1.13 in
Bolt Size (in)	7/8 in
Overall Height (in)	5.22 in
Housing Width (in)	9.75 in
Locking Collar Outside Diameter (in)	5.63 in
Standoff Distance (in)	0.25 in
Bolt Spacing (in)	7.59 in
Housing Cast Face to Outermost Bearing Face (in)	1.03 in
Length Through Bore (in)	5.06 in
Bolt Circle (in)	10.75 in
Inner Ring Outside Diameter (in)	4.561 in

Technical Specifications

Shaft Locking Type	Single Set Collar
Radial Dynamic Load Capacity (lb)	130,970 lb
Cage Material	Engineered Polymer
Static Load Rating (lb)	137,000 lb
Seal Type	Heavy Contact Seal
Housing Construction	Solid
Housing Type	Flange, Four Bolt
Radial Clearance	C3 STANDARD
Housing Style	Flange Block
Housing Material	Cast Iron
Misalignment Type	Dynamic
Rolling Element	Spherical Roller
Fixed/Expansion	Fixed
Series	Flange Blocks
Product	ZB2000
Maximum Speed (RPM)	1200 rpm
Seal Kit	MS11
Available Seal Type	K Light Contact Lip Seal; M Spring Loaded Heavy Contact Lip Seal (Buna and Viton); Z Clearance Seal; G Triple Lip
Microlock Kit	ML4
Ability to Relubricate	Yes
Setscrew Torque (in-lbs)	1350 in/lbs
Size Code	11
Housing Coating	POWDER COATED
Grease Fitting Thread Size	1/8 NPT
Vibration Frequency Fundamental Train	0.0071 cps
Max Operating Temperature (C)	107 °C
Vibration Frequency Roller Spin	0.0548 cps
Primary Seal	BUNA SPRING LOADED LIP SEAL
Vibration Frequency Inner Ring Defect	0.1717 cps
Locking Device Kit	SC11
Max Operating Temperature (F)	225 °F
Misalignment Capability	±2.0° Misalignment - Dynamic
Lubricant	EXXON RONEX MP STD
Vibration Frequency Outer Ring Defect	0.1283 cps
Insert	2311UR

General Specifications

UPC	698210870256
Weight	56.00 LB
Packaged Length	9.69 IN
Packaged Width	9.69 IN
Packaged Height	6.25 IN
HTC	8483204080
Country of Origin	Mexico