Forklift Brake Slave Cylinder (Wheel Cylinder): Selection Guide & OEM Replacement Options

A forklift brake slave cylinder, also called a wheel cylinder, is the hydraulic actuator mounted at each braked wheel of a forklift. It receives pressurized brake fluid from the master cylinder and converts that hydraulic pressure back into mechanical force, pushing the brake shoes or pads against the drum or disc to slow the wheel. Without correctly functioning slave cylinders, hydraulic pressure from the pedal never becomes stopping force at the wheels.

What It Does

• Each slave cylinder contains one or two pistons sealed inside a precision-machined bore.
• Incoming hydraulic pressure drives the pistons outward against the brake shoes or pads.
• Return springs retract the pistons when pressure is released, preventing brake drag.
• Slave cylinders are mounted on the axle backing plates and connected to the master cylinder by rigid lines or flexible hoses.
• Multi-wheel forklifts use matched sets; left and right cylinders are often mirror images and are not interchangeable.

How to Select the Right Slave Cylinder

• Match the forklift model, axle, and wheel position. Slave cylinders are side-specific on many trucks; confirm left-hand versus right-hand before ordering.
• Use the OEM reference number. Representative examples: Toyota 47530-U2100-71, Toyota 47520-32650-71, Hyster 5–7T slave cylinder, Hangcha 30HB slave pump, Heli three-point slave pump, Heli 25785-40601.
• Check bore diameter and piston count. Bore size must match the master cylinder’s output characteristics; single-piston and dual-piston designs serve different brake layouts.
• Verify mounting and line connections. Bolt spacing, bleeder screw position, and inlet thread must align with the backing plate and brake line.
• Replace in axle sets when practical. Replacing both sides together keeps braking balanced and avoids repeat downtime.

Common Failure Signs

• Brake fluid leaks or wet dust caps visible at the wheel ends.
• The forklift pulls to one side when braking, indicating uneven piston force.
• One wheel locks up prematurely while the other brakes weakly.
• The brake pedal feels normal but stopping power is reduced, pointing to seized pistons rather than a master cylinder fault.
• Corrosion or pitting on the piston bore, usually found during scheduled brake inspection.

Because slave cylinders live in the harshest environment of the brake system, exposed to dust, moisture, and heat at the wheel, they are among the most frequently replaced forklift brake components.

OEM Cross-Reference Coverage

STARSAN manufactures brake slave cylinders cross-referenced to the world’s major forklift brands, including:

• Toyota: 47530-U2100-71, 47520-32650-71
• Hyster: 5–7T slave cylinder
• Hangcha: 30HB slave pump
• Heli: three-point slave pump, 25785-40601
• TCM: 3EB-series slave cylinders
• Linde / Nissan / Mitsubishi / Komatsu / Hyundai: model-specific wheel cylinders available on request

Brand names and OEM numbers are used for identification reference only; final fitment is confirmed against the supplied reference part, specifications, and application details.

Why STARSAN

• Ningbo Xingcheng Engineering Machinery Co., Ltd. (brand STARSAN), founded in 2017 in Yuyao, Zhejiang, China, specializes in forklift brake systems, steering components, and structural assemblies.
• The company employs 120+ people, including 30+ technical staff, with an annual parts capacity of 50,000+ sets.
• Certified to ISO 9001:2015 and ISO 3834 with IIW welding certification; a German TRUMPF production management system has been in operation since 2020.
• Brake components cover 13 forklift brand series for OEM and aftermarket customers including Hyster-Yale, Hyundai, BYD Forklift, Lonking, and Noblelift, with exports to Germany, Turkey, India, Brazil, Vietnam, Korea, Malaysia, and Thailand.

Request a Quote

To receive an accurate quotation, please provide:

1. The OEM reference number (preferred), e.g., Toyota 47530-U2100-71
2. The forklift brand, model, tonnage, and wheel position (left/right)
3. Photos of the existing cylinder showing mounting points and line connections, or technical drawings

Contact: Lucy Cheung (Sales Director), +86 180 0670 2081, lucy.cheung@starsan.com | www.starsan.com