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Meritor MA212 Friction

Meritor “MA” Brand Friction Material : MA212

AN INCREASED LIFE STANDARD 20,000 LB GAWR FRICTION MATERIAL

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Meritor MA212 Friction

Meritor OEM Production Friction Lining Qualification • Meritor OEM Production Friction Materials Are Tested Beyond FMVSS 121

Requirements. • Would an aftermarket supplier even know about these specs?• Would an aftermarket supplier who is an OEM supplier vouch that they meet these specs on their

equivalent aftermarket block?• Lab Testing :

– Strength– Swell and Growth– Gogan Hardness– Specific Gravity

• Dynamometer Testing :– Brake Retardation– Power and Recovery– Effectiveness– Wear ( lining and drum )

• Vehicle Road Testing :– Hill holding / drawbar – will your friction hold a vehicle on a hill when spring

brakes are applied?– Durability– Brake balance

In-depth details & explanations of Meritor Friction testing can be found in Meritor publication SP-01100 : “Friction Material Basics & Brake Shoe Remanufacturing Procedures”

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Meritor MA212 Friction

MA 212 vs. R 201

• MA 212 has significantly higher retardation

• MA 212 has less fade and is more stable

• MA 212 has overall better wear but especially in lower temperatures where most of the work is done. On a weighted average basis MA 212 has 22.5% better wear

• MA 212 and R201 are very similar in drum effect

• MA 212 is suited to a wider range of applications

• All Meritor OEM Approved Production friction materials have an extended oven curing specification that reduces swell and growth – this specification is not used in competitor aftermarket materials

• All Meritor OEM Approved Production friction materials have been tested to meet FMVSS 121 requirements when used with Lightweight Brake Drums

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Meritor MA212 Friction

BRAKE DYNAMOMETER CERTIFICATION FMVSS 121 BRAKE STANDARD

BRAKE LININGS: SOR 212 MA 212 R 201

AXLE LOAD: 20,000 lbs

ROLLING RADIUS: 20.8 in

INERTIA: 934 slug.ft2

BRAKE TYPE: ROCKWELL Q PLUS

BRAKE SIZE: 16.5 x 7 in

AIR CHAMBER: TYPE 30

SLACK ADJUSTER: 5.5 in

Mod. 310

50 MPH RETARDATION

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Comparison Chart

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Meritor MA212 Friction

Meritor TP 212A Drum Brake Temperature vs. Wear Dynamometer Test Procedure

Wear in Inches• TEMP. MA 212 R 201

• 250 F .008 .012 65%• 350 F .016 .012 20%• 450 F .016 .031 10%• 550 F .040 .028 5%• Wtd. AVG. .0120 .0147

• On a Weighted Average Basis MA 212 has 22.5 % better wear than R201.

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Meritor MA212 Friction

MA 212 vs. R201

• MA 212 is quieter, even on front steer axles where noise is common

• MA 212 is Meritor’s Standard 20K Production OEM friction material

• MA 212 is cost competitive across a wide range of FMSI applications

• R201 is available from Meritor aftermarket only for limited FMSI applications.

• R201 is no longer available for Meritor OEM Production Brake applications.