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NEW BRAKE SHOE KITS
SEVERE SERVICE — SPECIALTY (23SS, 26SS)
• Provides superior fade and recovery characteristics • Proven reliability, durability and versatile performance
• Exceptional drum compatibility, decreasing maintenance and downtime • Superior flexural strength and modules of elasticity to resist cracking • Low thermal expansion provides great compatibility with automatic slack adjusters
• Medium/high-friction asbestos- and copper-free brake lining • Meets the FMVSS 121 brake standard at 26,000 lbs (210 AL Factor)
23SS • Combines low cost per mile and safety • Low swell and growth eliminate potential for wheel lockup Testing Typical inertia dynamometer plot test parameters FMVSS 121 BRAKE STANDARD: SEVERE SERVICE (23SS) BRAKE FADE MAXIMUM LIMIT RECOVERY 120 120 1200
8 7 6 5 4 3 2 1 0 20 30 40 50 60 70 80 50 MPH RETARDATION MINIMUM
Brake: 14-1/2”× 10” Axle Load: 26,000 lb AL Factor: 210 Normal Friction: 0.431 G Hot Friction: 0.423 F
MAXIMUM LIMIT
80
800
80
40
400
40
1 3 5 7 9 11 13 15 17 19 MINIMUM LIMIT
0
0
0
1 2 3 4 5 6 7 8 9 10
STOPS
STOPS
AIR PRESSURE (PSI)
PRESSURE TEMPERATURE (ºF)
PRESSURE TEMPERATURE (ºF)
26SS • Works in both high- and low-floor applications Testing Typical inertia dynamometer plot test parameters FMVSS 121 BRAKE STANDARD: SEVERE SERVICE (26SS) BRAKE FADE MAXIMUM LIMIT RECOVERY 120 120 1200
8 7 6 5 4 3 2 1 0 20 30 40 50 60 70 80 50 MPH RETARDATION MINIMUM
Brake: 16-1/2”× 8.625” Axle Load: 28,666 lb AL Factor: 195 Normal Friction: 0.463 G Hot Friction: 0.423 F
MAXIMUM LIMIT
80
800
80
40
400
40
1 3 5 7 9 11 13 15 17 19 MINIMUM LIMIT
0
0
0
1 2 3 4 5 6 7 8 9 10
STOPS
STOPS
AIR PRESSURE (PSI)
PRESSURE TEMPERATURE (ºF)
PRESSURE TEMPERATURE (ºF)
Applications
Transit/Coaches
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