10:20Air Brakes Explained Simply :: Service, Parking and Emergency Brakes One & the Same
Smart Drive Test
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OPTIMAL
BS-9870C
Brake disc
Specifications
- Brake Disc Thickness
- 18 mm
- Centering Diameter
- 85 mm
- Height
- 71 mm
- Minimum thickness
- 16 mm
- Outer Diameter
- 298 mm
- Fitting Position
- Rear Axle
- Brake Disc Type
- solid
- Surface
- Coated
- Hole Arrangement/Number
- 06/07
- Weight
- 8.39 kg
Vehicle Manufacturers
MERCEDES(4 items)
MERCEDES
9104230200
MERCEDES
9104230300
MERCEDES
A9104230200
MERCEDES
A9104230300
Other brands compatible with the same OE
12 total
Featured videos
Watch maintenance and replacement tutorials on YouTube.
10:20
9:44CDL Class A FULL In Cab Inspection and Air Brake Test 2023 - Pass Your CDL Trucking Road Test
Driving Academy | CDL Truck Driving School
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5:57About this part
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 BS-9870C have compatible (OE) part numbers?
Yes — it is linked to 4 OE-compatible part number(s), shown in the compatible parts section above.