9:44CDL Class A FULL In Cab Inspection and Air Brake Test 2023 - Pass Your CDL Trucking Road Test
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TRW
DF4449
Brake disc
Specifications
- Brake Disc Thickness
- 22 mm
- Centering Diameter
- 79 mm
- Height
- 73.3 mm
- Minimum thickness
- 20.4 mm
- Outer Diameter
- 292 mm
- Bolt Hole Circle Ø
- 120
- Number of Holes
- 5
- Brake Disc Type
- Vented
- Machining
- High-carbon
- Thread Size
- 14,2
- Colour
- Black
- Surface
- Painted
- Test Mark
- E1 90R 02 C0176/0490
- Weight
- 9.335 kg
Vehicle Manufacturers
BMW(4 items)
BMW
34 11 6 764 641
BMW
34 11 6 854 997
BMW
6 764 641
BMW
6 854 997
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9:44
14:21
10:20Air Brakes Explained Simply :: Service, Parking and Emergency Brakes One & the Same
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A brake disc (rotor) is the metal disc that the brake pads clamp onto to slow the wheel.
When the pads press against the spinning disc, friction converts the vehicle's motion into heat, which the disc dissipates; commercial vehicle discs are large and heat-resistant for high loads and repeated braking.
Mounted at the wheel as part of a disc brake. Because braking is safety critical, discs and pads are inspected on schedule and replaced by axle set by a qualified technician.
Frequently asked questions
Does DF4449 have compatible (OE) part numbers?
Yes — it is linked to 4 OE-compatible part number(s), shown in the compatible parts section above.