E-mail: [email protected]
Phone: +86 135 6411 2158
E-mail: [email protected]
Phone: +86 135 6411 2158
Date: Jul 05, 2026
The hydraulic cylinder gland (also called cylinder head, rod gland, or end gland) is a critical component located at the rod end of a hydraulic cylinder.
Sealing: Contains primary rod seals to prevent pressurized hydraulic fluid from leaking along the piston rod.
Guidance: Integrates a wear band or bushing to support the piston rod, absorb side loads, and reduce metal-to-metal friction.
Contamination control: Holds a wiper / dust seal to remove dirt, moisture, and debris from the rod surface during retraction.
Structural closure: Forms the front end closure of the cylinder barrel and provides mounting or connection points.
Threaded gland
Bolted flange gland
Snap‑ring retained gland
Tie‑rod mounted gland
Body: Steel, ductile iron, stainless steel
Machining Request
All dimensions to conform to ISO 2768‑m or drawing tolerance notes
Bore diameter tolerance: H7 / H8
Outer diameter tolerance: h7 / h8
Thread accuracy: 6H / 6g
Concentricity (TIR) ≤ 0.02 mm between sealing bore and rod guide bore
Squareness ≤ 0.03 mm/100 mm
Flatness of sealing faces ≤ 0.02 mm
Sealing bore surface: Ra 0.4–0.8 μm
Rod guiding surface: Ra 0.8–1.6 μm
Static sealing face: Ra 1.6–3.2 μm
Thread surfaces: Ra 3.2 μm
Other surfaces: Ra 6.3 μm
No burrs, sharp edges, scratches, or porosities
All sharp edges to be broken (0.2×45° chamfer or radius)
No cracks, inclusions, or machining defects
Full compliance with 2D technical drawing and GD&T requirements
Heat Treatment & Surface Treatment (if required)
Hardness: HRC 28–32 or as specified
Case hardening / induction hardening if needed
Phosphating, black oxide, or zinc plating as required
100% dimensional inspection
Pressure test if specified
Dimensional inspection report
Visual and surface defect check
Marking & Packaging
Part number, batch, material marked clearly
Rust prevention treatment
Secure packaging to avoid damage during transportation.