The Yale YCH range comprises double-acting hollow hydraulic cylinders with a centre hole, enabling pulling and tensioning applications with rapid hydraulic retraction. Capacities span 33 to 140 tonnes at 700 bar operating pressure. The double-acting design provides faster piston retraction than the single-acting YCS, particularly valuable for high-cycle pulling.
Designed for high-cycle pulling and tensioning
Yale states the YCH applications are basically the same as the single-acting YCS but with hydraulic return via the second oil port. Use of the YCH is recommended when the piston needs to be retracted quickly, particularly with high-cycle pulling applications. For double-acting hollow cylinders, the 'capacity push' is equivalent to the maximum pulling force achieved with a tensioning anchor or threaded spindle.
Suitable Applications
Per Yale: mirror the YCS range applications with the addition of high-cycle pulling work where rapid retraction is essential. Yale notes that on request, special hollow cylinders with pulling capacities up to 600 tonnes are supplied.
Key Features
- Yale ChroMo-Design: chromium-molybdenum steel, heat treated.
- Large Centre Hole Diameter: 33 to 80 mm depending on model.
- 700 bar Maximum Operating Pressure: Yale standard.
- Double-Acting with Hydraulic Return: rapid retraction for high-cycle work.
- Hard-Chromium Plated Piston: with replaceable, heat-treated saddle.
- Metric Mounting Threads: cylinder body and inside of piston.
- Stop Ring: prevents overtravel up to full operating pressure.
- Inner and Outer Dirt Wipers: protect both bores.
- 3/8 NPT Oil Ports: 2 ports with 2 CFY-1 female couplers included.
- All Cylinders with Carrying Handle: lifting rings fitted from YCH-62/250.
Technical Specifications
| Operating Pressure |
700 bar maximum |
| Action |
Double-acting with hydraulic return |
| Construction |
Yale ChroMo-Design |
| Oil Ports |
2 x 3/8 NPT |
| Couplers Included |
2 x CFY-1 |
| Centre Hole Diameter |
33 - 80 mm |
| Capacity Range, Push |
33 - 140 tonnes (335 - 1400 kN) |
| Capacity Range, Pull |
180 - 700 kN (model-dependent) |
| Stroke Range |
40 - 250 mm |
| Standard Models |
6 |
Frequently Asked Questions
Q: How does the YCH differ from the YCS?
The YCH is double-acting (hydraulic return); the YCS is single-acting (spring return). The YCH enables faster cycle times for high-cycle pulling. The trade-off is greater complexity - two hoses, two ports, and a double-acting pump required.
Q: Can special higher-capacity versions be ordered?
Yes. Yale states that on request, special hollow cylinders with pulling capacities up to 600 tonnes are available.
Q: What pump matches the YCH range?
Yale pairs YCH cylinders with HPH double-acting hand pumps - YCH-33 models pair with HPH-2/2 A; larger YCH-62 and 93 models step up to HPH-2/4 A.
