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Rexnord MBR3203 Spherical Roller Flange Cartridge Bearing 2-3/16" ID MBR-3203
Rexnord (Rex) MBR3203 mounted spherical roller bearing in a cast iron four-bolt round flange cartridge block. Rexnord material number 10424311. Bore Diameter: 2-3/16 in (2.1875 in). Housing Style: Flange cartridge, 4-bolt round flange. Housing Material: Cast iron, black powder coated. Rolling Elements: Spherical Roller. Insert: 3203U.
Decoding the designation:M — Rex spring-loaded heavy contact lip seal (Buna).
BR — Rex flanged cartridge block, ZBR3000 family.
3 — 3000 series, eccentric cam locking collar.
203 — bore code for a 2-3/16 in shaft.
What these specs mean in practice:Dynamic Load Rating: 161,780 N (36,370 lbf). Static Load Rating: 197,500 N (44,400 lbf). Limiting Speed: 2,200 rpm grease. Internal Clearance: C3. Misalignment: ±2.0° dynamic. Cage Material: Engineered polymer. Lubricant: Lithium complex NLGI 2 grease, relubricatable through a 1/8 NPT fitting. Max temp: 107 °C (225 °F). Expansion Type: Fixed. Locking Device: Eccentric cam collar.
Mounting data:Bolt Circle: 6 in. Bolt Spacing: 4.25 in. Bolt Size: 1/2 in. Housing Outside Diameter: 7.13 in. Pilot Diameter: 5 in. Pilot Depth: 1 in. Mounting Surface to End of Housing: 1.56 in. Mounting Plate to Collar Face: 1.94 in. Length Through Bore: 3.5 in. Item Weight: 5.53 kg (12.20 lb).
Quantity and configuration:Unit Quantity: 1 Pc. Complete flange cartridge unit with insert and collar. Seal kit MS7, locking kit SC3203.
Interchange guidance:Other Rex ZBR3000 seal options on the same housing: K (light contact lip), Z (clearance seal), G (triple lip). GTIN: 698210910877.
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