• Rex MBR321566 Spherical Roller Bearings ZBR3000 Flanged Cartridge Block. Contact Rexnord for more details.

Dimensions

Overall Width (in)	8.75 in
Housing Height (in)	3.13 in
Foot Height (in)	0.75 in
Bore Diameter (in)	2.9375 in
Overall Length (in)	8.75 in
Overall Height (in)	4.2 in
Bolt Size (in)	5/8 in
Pilot Diameter (in)	6.375 in
Housing Outside Diameter (in)	8.75 in
Locking Collar Outside Diameter (in)	4.06 in
Pilot Depth (in)	1.25 in
Mounting Plate to Collar Face (in)	2.2 in
Housing Cast Face to Outermost Bearing Face (in)	1.02 in
Length Through Bore (in)	4.2 in
Bolt Circle (in)	7.5 in
Bolt Spacing (in)	5.297 in
Inner Ring Outside Diameter (in)	3.37 in
Mounting Surface to End of Housing (in)	2 in

Technical Specifications

Seal Type	Heavy Contact Seal
Housing Type	Flange, Cartridge
Fixed/Expansion	Fixed
Housing Color	Black
Product	ZBR3000
Rolling Element	Spherical Roller
Series	Flanged Cartridge Blocks
Shaft Locking Type	Eccentric Collar
Housing Material	Cast Iron
End Cap	DTC91
Cage Material	Engineered Polymer
Misalignment Type	Dynamic
Radial Clearance	C3 STANDARD
Radial Dynamic Load Capacity (lb)	57,750 lb
Housing Construction	Solid
Housing Style	Flange Block
Static Load Rating (lb)	71,500 lb
Auxiliary Cap Kit	A9215, B9
Seal Kit	MS9
Ability to Relubricate	Yes
Bolt Hole Shape	Round Hole
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	ML3
Setscrew Torque (in-lbs)	460 in/lbs
Maximum Speed (RPM)	1700 rpm
Max Operating Temperature (F)	225 °F
Vibration Frequency Roller Spin	0.0591 cps
Primary Seal	BUNA SPRING LOADED LIP SEAL
Vibration Frequency Fundamental Train	0.0072 cps
Locking Device Kit	SC3215
Vibration Frequency Outer Ring Defect	0.1299 cps
Misalignment Capability	±2.0° Misalignment - Dynamic
Size Code	9
Lubricant	EXXON RONEX MP STD
Housing Coating	POWDER COATED
Max Operating Temperature (C)	107 °C
Grease Fitting Thread Size	1/8 NPT
Insert	3215U
Vibration Frequency Inner Ring Defect	0.1701 cps

General Specifications

UPC	782935280527
Weight	22.30 LB
HTC	8483204080
Country of Origin	Mexico