
The part
What a wheel cylinder does
The wheel cylinder sits inside a drum brake. When the driver presses the pedal, hydraulic pressure reaches the cylinder and pushes its pistons outward, which presses the brake shoes against the drum.
- Weight
- 0.6–1 kg/pcs
- MOQ
- 1000 pcs
WUJIE produces this part from a cast housing with machined bores, fitted with rubber boots and a bleeder fitting. Send a drawing or a sample and we will confirm the specification with you before production.
Drum brake application
Where the wheel cylinder sits in the brake
It is the link between hydraulic pressure and the shoes. Here is the sequence, from pedal to drum.
Brake pedal
The driver presses the pedal.
Master cylinder and brake line
Pedal force becomes hydraulic pressure that travels along the brake line.
Wheel cylinder
Pressure pushes its pistons outward inside each drum brake.
WUJIE makes this part
Brake shoes
The pistons press the shoes against the inside of the drum.
Brake drum
Friction between shoes and drum slows the wheel.
What to send for a match
Wheel cylinders differ by vehicle and brake. These details let us confirm the right part.
- A drawing, or a physical sample of the part
- The quantity you plan to order (MOQ 1000 pcs)
- Markings or packaging you need on the part
- Any inspection report or third-party inspection requirement
Product details
Look closely at the part
Three real photos of the wheel cylinder, each from a different angle, and what each part of it is.

Housing window and bleeder screw

Cast marking and rubber-capped fitting

Cast housing, rubber cap and metal tab
- Cast housing
- A cast body with a machined bore area visible through the housing window.
- Rubber boots
- Black rubber boots cover both ends of the cylinder.
- Bleeder fitting
- Views show a bleeder screw with a coloured mark and rubber-capped fittings on top of the housing.
Manufacturing
Made in our Xiaoshan workshop
Founded in 2016, WUJIE machines wheel cylinders in Xiaoshan, Hangzhou. These photos are from our own floor.
CNC lathes
Turning of round features on cast and machined parts.
Drilling/tapping centers
Drilled and threaded holes machined in a controlled set-up.
Reamers
Finishing of bores and holes to the size on your drawing.



Customisation and inspection
From your drawing to a checked part
The documented path for custom and OEM/ODM orders, in the order it happens.
Send your requirement
Share a drawing or a sample, the quantity and any markings. The minimum order is 1000 pcs.
Confirm the specification
We review the part with you and agree the details for custom production or OEM/ODM before work starts.
Machining and checks
The part is made on CNC lathes and drilling/tapping centers, with reamers used to finish bores and holes.
Inspection
Ask for an inspection report with the order. Third-party inspection can also be arranged by the buyer.
Questions
Buyer questions, answered
The basics on the part, ordering and inspection. Anything else, ask us.
What does a wheel cylinder do in a drum brake?
It converts hydraulic pressure from the brake line into mechanical force. Its pistons push outward and press the brake shoes against the inside of the drum.
What is the minimum order quantity?
The MOQ is 1000 pcs.
Can you make a wheel cylinder to my drawing or sample?
Yes. Custom production and OEM/ODM are supported. Send a drawing or sample details with your enquiry and we will confirm the specification with you.
Do you provide inspection reports?
Yes, inspection reports are available, and third-party inspection is supported. Mention your inspection requirement in your enquiry.
How heavy is the wheel cylinder?
The wheel cylinders we supply range from 0.6 to 1 kg per piece (0.6–1 kg/pcs), depending on the part.
Where can I see prices?
This site is for enquiries, so prices are not published. Send your requirement through the quote form and we will respond to you directly.
Request a quote
Tell us what you need
Four fields and a security check. Send a drawing or sample description and the quantity you have in mind.


