Ballast Plate Lift Cylinder

Bore: Φ50 mm

Rod: Φ28 mm

Stroke: 340 mm (per plate lift height)

Operating pressure: continuous 16 MPa, max 18 MPa

Max push force: 35 kN (at 18 MPa, full-bore side)

Max pull force: 24 kN (at 18 MPa, annular side)

Breakaway pressure: ≤0.25 MPa (low-friction seals, sensitive response)

Piston velocity: <0.5 m/s

Operating frequency: intermittent, several lift adjustments per profiling operation

Internal leakage: ≤0.025 ml/min (at 16 MPa, over seal service life)

Temperature range: -20 ℃ to +80 ℃ (standard); -40 ℃ to +120 ℃ customizable

Suitable for: railway ballast regulating machines, ballast sweeping machines, etc.

Smooth Lifting & Precise Positioning

The barrel is high-yield-ratio quenched and tempered alloy steel; the piston rod is precision hard-chrome plated (HV900–1100), providing stable lifting under the weight of the plate and ballast reaction forces, ensuring the plate accurately reaches its working depth or safe stowed height.

High Side-Load Resistance & Guidance

Wide-profile bronze or composite guide rings in the bore effectively absorb radial forces from uneven plate loading, preventing rod scoring.

Multi-Stage Seals & Dust Protection

A metal scraper ring and multiple heavy-duty wipers at the gland effectively block ballast dust, stone chips, and rainwater. The main seal is a hydrolysis-resistant polyurethane/filled-PTFE composite for zero leakage in all-weather outdoor service.

Internal Cushioning for Noise Reduction

Progressive cushions at both ends decelerate the cylinder at end positions, eliminating impact noise and protecting the lift mechanism and cylinder.

Compact & Maintenance-Free

Mounting dimensions are optimized for the compact lift mechanism. Self-lubricating composite bushings in the clevises eliminate daily greasing and provide long service life under high-frequency lifting.

Optional Position Monitoring

A built-in displacement sensor can provide real-time plate height feedback for automatic ballast section control via the main system.

Special bore, rod, and stroke

Built-in displacement sensor

Full stainless steel body and piston rod

Explosion-proof / mining certifications

Special mounting distances and port configurations