XZR8®
Hyster 309644 Master Cylinder Assembly
Hyster 309644 Master Cylinder Assembly - Image 2
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Hyster 309644 Master Cylinder Assembly


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Bore Size1 inch
Connecting Rods InclusionYes
Mounting Hole Center Distance2.36 inches
Cylinder Length5.91 inches
Piston MaterialHardened Steel
Port ConfigurationStandard Hydraulic Fitting
ApplicationsHydraulic Brake System
Net Weight0.91 kg

Manufacturer No.

  • 309644
  • HY309644
  • HY0309644
  • 0309644

OEM Part No.

  • 309644

Interchange No.

  • HY309644
  • HY0309644
  • 0309644

Fitment Vehicles

  • Hyster H40XLA177
  • Hyster H45XLA177
  • Hyster H50XLA177
  • Hyster H60XLA177
  • Hyster S25XLB010
  • Hyster S30XLB010
  • Hyster S35XLB010
  • Hyster S40XLA187
  • Hyster S45XLA187
  • Hyster S50XLA187
  • Hyster S55XLA187
  • Hyster S60XLA187
The Hyster 309644 master cylinder assembly functions as the primary hydraulic pressure generator in the forklift brake system. It features a 1-inch bore diameter with integrated push rod for direct mechanical actuation. The piston is constructed from hardened steel to resist wear and corrosion under high-cycle industrial operation. Mounting hole spacing measures 2.36 inches (60 mm) for direct bolt-on replacement. Cylinder body length is 5.91 inches (150 mm). Designed to meet OEM hydraulic pressure specifications for Hyster internal combustion forklifts.