Wheel Mounting Compound

WM-10

Rail Wheel-to-Axle Press Fitting Lubricant

Muscle Wheel Mounting Compound WM-10™ is an extreme-pressure mounting compound formulated for press fitting steel railroad wheels onto axles. It improves lubricity during wheel mounting, reduces chatter and alignment problems, and protects mating metal surfaces during the press-fit operation. WM-10 is intended for professional railroad wheel shops, railcar repair facilities, locomotive maintenance facilities, and railway maintenance personnel.

 
 
 
 

Key Features & Benefits

  • Improves wheel-to-axle press fitting

  • Reduces chatter and noise during mounting

  • Reduces wheel alignment problems

  • Provides visible application coverage

  • Protects metal surfaces from wear under high contact pressures and low speeds

  • Limits seizing during coupling

  • Safer alternative to traditional linseed-oil and lead-containing compounds

  • Does not spontaneously combust, which is a concern with linseed oil-soaked rags or clothing

  • Easy to apply by brush or roller

  • A.A.R. approved since 1997

 
 

What is Wheel Mounting Compound WM-10™?

WM-10 is a specialized liquid compound used during the press fitting of steel railroad wheels onto axles. Applied before mounting, it provides lubricity at the wheel-bore and axle-wheel-seat interface, helping the wheel move onto the axle more smoothly during the controlled press operation. The formulation contains Muscle Metal Treatment MT-10® technology for improved lubricity and wheel-to-axle fitting.

WM-10 is listed as an approved wheel-mounting compound in the AAR Manual of Standards and Recommended Practices, Section G, Part II—Wheel and Axle Shop Manual.  It has been used by major railroads and independent rail shops since 1997.

Where Wheel Mounting Compound WM-10™ Is Used

  • Railroad wheel shops

  • Railcar repair and maintenance facilities

  • Freight-car maintenance operations

  • Railway mechanical departments

  • Wheelset assembly and reconditioning facilities

  • Qualified contractors performing wheel-and-axle work

 
Blue Train.
Train Rail Wheel.
Train Wheel and Axle Wheelset Assemblies on a Train Car.
 

Directions for Application

Shake container or mix Wheel Mounting Compound WM-10™ before use. Apply the lubricant by brush or roller to the outside axle wheel seats and the inside surfaces of the wheel bores before mounting.

Wheel mounting must be performed using applicable railroad procedures, mounting-pressure requirements, inspection criteria, and facility controls. See table 4.2 in MSRPGII for proper mounting pressures.

Why Application Visibility Matters

Wheel Mounting Compound WM-10™ has a distinctive dark blue color that allows technicians to see where the compound has been applied. Visible coverage helps confirm application to the mating surfaces before the wheel is pressed onto the axle.


Technical Data

  • Appearance: Dark blue liquid

  • Odor: Mild petroleum

  • Flash point: 317°F (158°C) ASTM D93

  • Specific gravity @ 60°F: 0.9516 g/cm3 ASTM D1298

  • Viscosity @ 40°C: 26.12 cSt ASTM D445

  • Water solubility: Insoluble (water)

  • Rust test, 4 hr: Pass (no rust) ASTM D665A

  • Four-ball EP properties, LWI: 247.5 ASTM D2783

  • Four-ball EP, Weld point, Kg: > 800 ASTM D2783

These properties are typical values and do not constitute a product specification.