B2B
About this product

1)Surface treatment: Electrophoresis coating, spray coating 

2)Heat treatment: Induction quenching

3)Material: high quality carbon steel

4)Characteristics: Strong corrosive, resistance and excellect braking performance

5)Approved by SAE and FMVSS-121 test

This set includes a pair of brake shoes 4709ES2 lined with brake lining 4709D, which fits many models of heavy duty trucks, and semi-trailers.

 

• Process:

Steel plate-punching-milling-welding-drilling-induction quenching-electrophoresis coating-inspection-restriking-packing.

• Weld detail:

Carbon dioxide gas arc welding is to guarantee strength, no cracked or weakened welds, no distortion of the shoe webs.

• Cam and anchor detail:

Induction hardended cam and anchor is for long term durability and life.  Hardness up to HRC30-40. No wear to the pin recess prevents lateral movement.

• Shoe platform detail:

No corrosion or distortion to the shoe platorm provides optimum lining security and geometric operation helping reduce brake noise.

• Rivet hole detail:

No damage, elongation or ovality of the rivet hole reduces the risk of loosing rivets.

  

Brake Shoe FMSI® Number

4709S

Brake Configuration

 'S' cam

Air Chamber

Type 30 Long Stroke

Slack Adjuster Length

5-1/2 inches

Adjustment

Automatic

Brake Size

16-1/2 x 7 inches

Drum Effective Radius

8-1/4 inches

Axle Load (GAWR)

23000 lb

Static Loaded Radius/Rolling Radius

19-3/5 inches

Test Inertia

952 slug·ftÇ

Hardness

HRC30-40

Control Thermocouple

Hottest lining, recessed 0.040" below surface

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4709-A004 Lined Brake Shoe 4709ES2 Set 16-1/2'' x 7''

  • Model #: VKWU81DY
  • Availability: out of stock
  • $41.70