Greenlee 746A Hydraulic Ram - Reconditioned - 746A
Up to 11 tons of force when used with a compatible Greenlee hydraulic pump.
Use with Greenlee knockout punches, dies and draw studs for punching holes in mild steel, stainless steel, brass, copper, aluminum, fiberglass and plastics.
Length (in) : 8.75
Width (in) : 6.88
Height (in) : 4.75
What our Experts Think
Q&A
Q: What is the Greenlee 746A Hydraulic Ram used for?
A: It is a heavy-duty 11-ton hydraulic ram used with Greenlee knockout punches, dies, and draw studs to punch clean holes in metal and other materials during electrical and industrial installation work.
Q: What does the system work with?
A: It is designed to be used with a compatible Greenlee hydraulic pump system, which powers the ram to generate punching force for conduit and panel work.
Q: What materials can it punch through?
A: It can punch holes in mild steel, stainless steel, aluminum, brass, copper, fiberglass, and plastics when used with the correct dies and tooling.
Q: What is the force capacity?
A: The ram delivers up to 11 tons of hydraulic force, making it suitable for demanding knockout applications in electrical panels and industrial enclosures.
Q: What is the stroke length?
A: It has a 1.21-inch stroke, providing enough travel for standard knockout punching operations.
Q: What does “Reconditioned” mean?
A: A reconditioned unit has been inspected, tested, and restored to working condition. It may show cosmetic wear or repainting but remains fully functional, often at a lower cost than new equipment.
Q: Where is it typically used?
A: It is commonly used by electricians, industrial maintenance teams, and contractors for conduit installation, panel building, and metal fabrication work.
Maintenance Tips
- Inspect ram body and cylinder before each use for leaks, scoring, dents, or corrosion
- Check hydraulic hoses, fittings, and couplers for cracks, wear, or fluid seepage
- Keep hydraulic fluid clean and at proper level; top up only with manufacturer-recommended fluid
- Bleed air from the system if ram movement becomes uneven or sluggish
- Wipe down ram after each use to remove dirt, dust, and moisture that can damage seals
- Lubricate moving pins and pivot points lightly to ensure smooth operation and reduce wear
- Inspect seals and O-rings regularly for damage or hardening; replace if hydraulic leaks occur
- Ensure all connections are tightly secured before pressurizing the system
- Never exceed rated hydraulic capacity to avoid internal damage or unsafe operation
- Store in a clean, dry environment to prevent rust and contamination of hydraulic components
- Cycle the ram periodically during storage to keep seals flexible and prevent sticking
- Keep ram piston rod clean and free of debris before and after use to protect seals
- Inspect mounting points and attachments for deformation or fatigue before each job
- For reconditioned units, monitor previously serviced areas more frequently for leaks or wear
- Release pressure fully before disconnecting hoses or performing any maintenance
- Maintain a regular inspection schedule to ensure safe lifting, pulling, or pressing performance
Damage 
Loss 
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