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Long-Stroke Air-Brake Actuator Marking
- Ground Vehicle Standard
- J1817_201212
- Revised
Downloadable datasets available
Annotation ability available
Sector:
Issuing Committee:
Language:
English
Scope
This SAE Recommended Practice describes a marking system to distinguish long-stroke from standard stroke for service, parking, and combination air-brake actuators, roto-chambers, and components. Said actuators are used for applying cam and disc-type foundation brakes by slack adjuster means.
Rationale
Rationale for revision: Figure 4 is overly specific (remove Figure 4). Replace the term Readjust with Brake Adjustment Limit in Tables 1A, 1B, and 1C to update obsolete terminology associated with manual slack adjusters. Remove Type 14 from Table 1A and 1B as this size is the only hybrid size (externally the same as a type 16) on the table and not relevant for stroke ratings. Revise standard rated stroke for type 24 from 2.25” to 2.50”. Reduce specifications on trapezoidal clamp tag and call for alternative marking with same information for chambers with clamps.
Recommended Content
| Ground Vehicle Standard | Long-Stroke Air-Brake Actuator Marking |
| Technical Paper | The VTI Flat Bed Tyre Test Facility - A New Tool for Testing Commercial Tyre Characteristics |
Data Sets - Support Documents
| Title | Description | Download |
|---|---|---|
| TABLE 1A | RECOMMENDED AIR-BRAKE ACTUATOR SERVICE STROKE - CLAMP BAND/SEALED DESIGNS - STANDARD STROKE | |
| TABLE 1B | RECOMMENDED AIR-BRAKE ACTUATOR SERVICE STROKE CLAMP BAND/SEALED DESIGNS - LONG-STROKE BRAKE ACTUATORS | |
| TABLE 1C | RECOMMENDED AIR-BRAKE ACTUATOR SERVICE STROKE ROTO-CHAMBER DESIGNS |
Issuing Committee
Truck and Bus Brake Actuator Committee
The Truck and Bus Brake Actuator Committee of the Truck and Bus Brake and Advanced Driver Assistance Systems Steering Committee is responsible for developing, reviewing, and approving recommended practices, standards, and information reports related to air brake actuators and their interfacing as used on trucks, tractor-trailer combinations and buses over 10,000 lbs (4500 Kg) GVWR designed primarily for highway use.
Reference
| Number | Title |
|---|---|
| J1469_201702 | Air Brake Actuator Test Procedure, Truck-Tractor, Bus, and Trailers |
| J1953_201805 | Brake-Stroke Indicator Design Guideline for Cam or Disc Air-Brake Actuators |
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