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COMPLETE ASSEMBLED UNIT

Bearing Assembly / Housing

Complete cylindrical cartridge unit (Bearing Assembly / Housing) ready to drop into the slurry pump frame.

A Complete Unit Ready for Installation

The Bearing Assembly / Housing is supplied as a complete, pre-assembled unit: it includes the cylindrical cast housing, precision-machined shaft with impeller thread, back-to-back tapered roller bearings, end covers, and labyrinth seals at both ends.

Bearing Assembly / Housing Components

Configuration Complete assembled cartridge (Bearing Assembly / Housing)
Housing Ductile iron cylindrical barrel with lifting lugs and bottom axial adjustment lug
Shaft High-tensile alloy steel with precision impeller thread and drive-end keyway
Bearings Heavy-duty double-row tapered roller bearings
Sealing Protection Labyrinth seals and piston rings at both ends to prevent slurry and moisture ingress

Drop-In Replacement & Axial Adjustment

Keeping a complete Bearing Assembly / Housing in plant inventory allows maintenance crews to swap the entire drive end in minutes during a scheduled shutdown and adjust front impeller-to-throatbush clearance using the bottom adjusting screw.

[ENGINEERING DECISION CRITERIA — STATION 01]

Metallurgical Rule: Timken/SKF spherical/taper roller bearings for combined axial thrust. External micrometer screw axial adjustment is mandatory.

Critical Variables: Continuous operating hours per shift, lubrication type (NLGI 2 grease or ISO VG 220 oil bath), and ambient pump room temperature.

Avoided Risk: Prevents catastrophic shaft seizure and permits front impeller clearance adjustment without disconnecting suction piping.

ISO 281:2007 RATING (p = 10/3) L₁₀ₘₕ = a_ISO(e_c·C_u/P, κ) · (C/P)^(10/3)

Modified Bearing Life L₁₀ₘₕ Inspector (Labyrinth Seal vs Contaminated Felt) & Radial Belt Load Fᵣ

RADIAL BELT LOAD (Fᵣ) & P_eq
6.71 kN (P = 14.81 kN)
n₂ = 1001 RPM • u₂ = 19.92 m/s
MODIFIED LIFE SMAT LABYRINTH SEAL
52,438 h (a_ISO = 1.25×)
Base ISO 281 L₁₀h = 41,950 h (e_c ≥ 0.6)
CONTAMINATED FELT SEAL RISK
9,229 h (a_ISO = 0.22×)
Silica ingress (e_c ≤ 0.1) cuts life by -82%
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