Short answer: in drum brake sourcing, the standard catalog name is usually brake wheel cylinder. Some buyers may call it a brake slave cylinder, but product matching should be based on bore size, port thread, mounting distance, left/right position, piston or boot structure and sample photos.
Brake wheel cylinders are small hydraulic parts, but incorrect naming can cause confusion in international sourcing. For Meklov’s product pages, we use brake wheel cylinder as the primary term and brake slave cylinder as a supporting keyword for buyers who use that phrase.
What does a brake wheel cylinder do?
A brake wheel cylinder is used in drum brake systems. Hydraulic pressure moves the internal pistons outward, pushing the brake shoes against the drum. Because the body, bore, port and mounting details vary by model, buyers should not rely on appearance only.
Is brake slave cylinder the same term?
In some markets and workshop language, buyers may use brake slave cylinder to describe a similar hydraulic actuation component. For aftermarket catalog and B2B product pages, brake wheel cylinder is usually the cleaner and more specific term for drum brake applications.
RFQ data for brake wheel cylinders
- Product model or buyer part number
- Bore size
- Port thread and fitting angle
- Mounting hole distance
- Left/right position or pair relationship
- Piston, rubber boot and bleeder screw structure
- Single unit, pair set or fitting kit requirement
- Packaging and annual volume
Why bore and port details matter
Two brake wheel cylinders may look close in a photo but use different bore sizes or port threads. A close-up photo of the port and a measured mounting distance can prevent wrong quotations and wrong inventory.
How distributors should organize wheel cylinder programs
Distributors can separate wheel cylinder ranges into single units, left/right pairs, cylinder sets and fitting kits. Each group should have clear photos, dimensions, packaging data and model references.
For current sourcing, visit Meklov brake wheel cylinders for drum brake systems or use the Meklov RFQ checklist.