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Single-TelescopicHydraulicSupport Legs
Single-stage hydraulic support legs deliver reliable roof support in longwall operations，combining robust structure,stable performance，and low maintenance for
continuous mining productivity.
High Support Force
Delivers strong support
capacity for longwall roof
control.
Single-Stage Simplicity
One-stage design for a compact structure and easy maintenance.
Dynamic Load Protection
Absorbs impact and dynamic loads to protect equipment and structure.
Corrosion & Seal Protection
Advanced coatings and sealing systems for harsh mining conditions.
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Popular Single-Telescopic Hydraulic Support Legs
Reference configurations for medium- and heavy-duty powered roof supports
ST-320/220-800 Single-Telescopic Support Leg
ST-400/290-1000 Heavy-Duty Single-Telescopic Support Leg
ST-320/220-800 Single-Telescopic Support Leg
QUICK DETAILS
· Bore：320mm
· Moving Column：220 mm
· Stroke：800 mm
· Reference Pressure：31.5 MPa
· Theoretical Extension Force：≈2533 kN
PACKAGING & DELIVERY
· Steel pallet
· wooden case export packing Container
· flat-rack
· break-bulk shipment
APPLICATIONS
· Medium-Seam Shield Supports
· Chock-Shield Supports
· Replacement Leg Programs
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ST-400/290-1000 Heavy-Duty Single-Telescopic Support Leg
QUICK DETAILS
· Bore：400 mm
· Moving Column：290 mm
· Stroke：1000 mm
· Reference Pressure：31.5 MPa
· Theoretical Extension Force：≈3958 kN
PACKAGING & DELIVERY
· Heavy wooden case
· steel export frame Container
· flat-rack
· break-bulk shipment
APPLICATIONS
· High-Resistance Shield Supports
· Heavy Chock-Shield Supports
· Retrofit & Remanufacturing
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Custom Single-Telescopic Hydraulic Support Legs
Configure bore, rod diameter，stroke，setting force，connections and sealing around your actual support
geometry.
Bore & Force
Cylinder Bore · Setting Pressure · Required Leg Force
Stroke & Closed Length
Effective Stroke · Closed Length · Extension Ratio
Mounting Interfaces
Upper Ball / Pin . Lower Connection · Support Geometry
Seals & Surface Protection
Seal Package · Rod Plating.
Corrosion Resistance
Valve & Hydraulic Interface
Check Valve · Yield / Relief Valve · Ports & Hoses
Sensors & Testing
Pressure Sensor . Stroke Sensor · Pressure / Cycle Testing
Successful Cases
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Single-Telescopic Hydraulic Support Legs FAQ
Key answers for powered roof support manufacturers
and maintenance buyers
1. What are Single-Telescopic Hydraulic Support Legs?
Single-Telescopic Hydraulic Support Legs are hydraulic
cylinders designed to provide vertical support and load-
bearing force.
2. Where are they used?
Single-Telescopic Hydraulic Support Legs are used in
mining roof supports, support systems and heavy
industrial equipment.
3. What bore sizes are available?
Single-Telescopic Hydraulic Support Legs can be
customized with different bore and rod diameters.
4. What stroke lengths are available?
Single-Telescopic Hydraulic Support Legs can be
designed with different stroke and closed-length
combinations.
5. What working pressures are available?
Single-Telescopic Hydraulic Support Legs can be
configured for different hydraulic pressures and support
forces.
6. What mounting options are available?
Single-Telescopic Hydraulic Support Legs can use
different base, pin and interface mounting designs.
7. What surface protection is available?
Single-Telescopic Hydraulic Support Legs can include
chrome plating, corrosion protection and wear-resistant
surface treatments.
8. Can they be customized?
Yes. Single-Telescopic Hydraulic Support Legs can be
customized by bore, stroke, pressure, mounting and
hydraulic interface.