• Rex MB2311R48 Spherical Roller Bearings ZB2000 Flange Block. Contact Rexnord for more details.

Dimensions

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

Technical Specifications

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

General Specifications

UPC	698210010584
Weight	59.00 LB
Packaged Length	9.69 IN
Packaged Width	9.69 IN
Packaged Height	6.25 IN
HTC	8483204080