Brake Chamber 2.25" Standard Stroke 4.00" 90° - 179.SC20DB

Part#: AAA971SC20DB

Features and Benefits

  • Service-only brake chamber for drum brake axle positions not requiring parking brake function
  • Actuator type size 20 for correct service chamber selection on type-20 brake configurations
  • Standard stroke type with 2.25" available stroke for standard drum brake geometry compatibility
  • Stud spacing dimension ensures correct chamber-to-mounting bracket hole alignment
  • Air port position enables correct air supply line routing on type-20 service brake installations
  • Clampband position ensures correct service diaphragm orientation on 20-type chambers

Warranty

Warranty Up to 3 years warranty

Please contact customer service to know more details

Actuator Type Size20
Stroke TypeStandard
Available Stroke2.25 in.
A - Length from mounting bracket to end of Spring Housing4.00 in.
D - Dimension at Service Clampband8.60 in.
E - Stud Spacing4.75 in.
J - Pushrod Length from face of Service Housing10.20 in.
K - Distance to Clevis Pin centerline from face of Service HousingDistance to Clevis Pin centerline from face of Service Housing
T - Air Port position90°
S1 - Service Clampband position
Weight7.50 lbs
Quantity1
Interchange
179SC20DB
802282
BW802282
K052486
SC20d
The Brake Chamber is a standard stroke Type 20 design, engineered for reliable actuation on Heavy Duty commercial vehicle axle applications. Featuring 2.25" of available travel, the unit delivers consistent clamping force and dependable performance across a wide range of operational configurations.
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