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AdvancingRams &ConveyorPush Jacks
Fast, Controlled
Movement for
Longwall Supports
& AFC Systems
Double-acting cylinders
for fast roof support
advance and AFC
repositioning in
longwall mining.
Bi-Directional Push
& Pull
Double-acting hydraulics
control both support advance
and conveyor repositioning.
Fast Advance Cycles
Match ram flow and stroke to high-production longwall
sequencing.
AFC & Relay-Bar Matching
Configure stroke, pins and
mounting geometry around the real conveyor interface.
Mining-Duty Reliability
Seals, rods and cylinder surfaces are built for wet， abrasive，high-cycle underground service.
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Popular Advancing Rams & Conveyor Push Jacks
Reference configurations for powered roof support
advance and AFC positioning
AR-160/105-700
Advancing Ram
CPJ-180/120-900 Heavy-Duty Conveyor Push Jack
AR-160/105-700 Advancing Ram
Quick Details
· Function: Roof Support Advance AFC Movement
· Hydraulic Action: Double Acting
· Mounting: Pin/Clevis
· Relay-Bar Interface: Project-Specific
· Application: Standard Longwall Roof Support
Packaging & Delivery
· Ports capped and sealed
· Rod anti-corrosion protection
· Wooden Case / Steel Pallet / Export Frame
· Container / Flat-Rack / Break-Bulk
Applications
· Standard Shield Supports
· AFC Repositioning
· Replacement Ram Programs
· Roof Support Remanufacturing
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CPJ-180/120-900 Heavy-Duty Conveyor Push Jack
Quick Details
· Main Function: AFC Push / Support Pull
· Hydraulic Action: Double Acting
· Mounting: Heavy Pin/Clevis
· Relay Bar: Direct / Reverse Mounted
· Application: High-Production Longwall
Packaging & Delivery
· Cylinder retracted for transport
· Rods and pin bores protected
· Heavy Wooden Case / Steel Export Frame
· Container / Flat-Rack / Break-Bulk
Applications
· Heavy AFC Systems
· High-Output Longwalls
· High-Friction Floor Conditions
· Retrofit & Replacement
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Custom Advancing Rams & Conveyor Push Jacks
Built Around Your Support，Relay Bar & AFC
Bore, Rod & Force
Cylinder Bore · Rod Diameter · Push / Pull Requirement
Stroke & Web Depth
Required Advance Stroke·AFC Cutting Web Closed Length
Mounting & Relay Bar
Pin Diameter · Clevis Width · Direct / Reverse Mount
Hydraulic Circuit & Valves
Supply Pressure · Flow Requirement · Directional / Check Valves
Seals & Surface Protection
Rod Seal · Wiper · Rod Plating
/ Corrosion Protection
Sensors & Testing
Stroke Sensor · Position Feedback · Pressure /
Cycle Testing
Successful Cases
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Advancing Rams & Conveyor Push Jacks FAQ
Key answers for longwall roof-support manufacturers
and maintenance buyers
1. What are Advancing Rams & Conveyor Push Jacks?
Advancing Rams & Conveyor Push Jacks are hydraulic
cylinders used to advance roof supports and reposition
conveyors in longwall mining.
2. Where are they used?
Advancing Rams & Conveyor Push Jacks are used in
underground longwall faces with hydraulic roof supports
and AFC systems.
3. What stroke lengths are available?
Advancing Rams & Conveyor Push Jacks can be
customized with different stroke lengths for specific
advancing distances.
4. What bore sizes are available?
Advancing Rams & Conveyor Push Jacks can be
configured with different bore and rod diameters.
5. What working pressures are available?
Advancing Rams & Conveyor Push Jacks can be designed
for different hydraulic pressures and pushing forces.
6. Can they connect with AFC systems?
Yes. Advancing Rams & Conveyor Push Jacks can be
matched with AFC and relay-bar configurations.
7. What surface protection is available?
Advancing Rams & Conveyor Push Jacks can include
chrome plating, corrosion protection and wear-resistant
treatments.
8. Can they be customized?
Yes. Advancing Rams & Conveyor Push Jacks can be
customized by bore, stroke, force, mounting and
hydraulic interface.