Hydro Cylinder with & without Stroke End Cushioning

Hydro Cylinders with Optional Stroke End Cushioning - ROEMHELD B1.282

• Max. operating pressure 200 bar
• Piston diameter: 25 - 80 mm
• Rod diameter: 16 - 50 mm
• Max. push force: 9.8 - 100.5 kN
• Strokes in mm steps: 60 - 1200 mm

Advantages:

• Adjustable stroke end cushioning as an option
• Max. piston speed 0.5 m/s
• Low wear and friction Glydring seals
• High service life due to the use of guide rings at the piston and the piston rod
• Negligible leakage by double sealing piston rod
• Piston rod induction hardened and chromium-plated
• Effective wiper seal
• Self-centring cushioning discs with relief valve function for unthrottled cylinder start
• Fixing thread and centring spigot at both cylinder heads allow mounting of non standard accessories
• Particularly suitable for fixture building by direct mounting on cylinder head (small pitch circle dia.) and accurate centring
• Compact design

Description:

Double-acting hydro-cylinders with connecting dimensions according to DIN ISO 6020. Only exception is the shorter overall length. On request also available in the longer version as per DIN ISO 60 20. The piston rod is provided with an external thread. For fixing, the front and back part of the body is provided with 4 internal threads. The adjus– table stroke end cushioning avoids a too hard stop of the piston in the cylinder body with the following applications:

1. High piston speed
2. Additional load at the piston rod
3. If an external stop cannot be provided to compensate the additional load

Functioning - Stroke end cushioning:

Just before the stroke end of the piston, the cushioning spigot enters into the cushioning disc and reduces the flow rate in the return line and thereby also the piston speed. The residual speed can be adjusted in certain limits by an adjustable flow control valve.