The Yale YCS range comprises hollow hydraulic cylinders with a centre hole through the piston, enabling a threaded rod to pass through the cylinder for extremely high pulling forces. Capacities span 12 to 93 tonnes at 700 bar operating pressure. The cylinders use Yale's ChroMo-Design construction.
Designed for pulling and tensioning applications using a threaded rod
Yale documentation describes hollow cylinders as the power component within hydraulic puller sets and test rigs. Specific applications per Yale: prestressing of anchor bolts, removing of axles, shafts and bushings, extracting of tubes, and heavy-duty pulling applications. By using long threaded rods and readjusting the nut, larger pulling distances can be achieved with short cylinder strokes.
Suitable Applications
Per Yale: prestressing anchor bolts, removing axles, shafts and bushings, extracting tubes, and heavy-duty pulling. Hollow cylinders also serve as the power component within Yale puller sets (BMZ and YHP) and the RPYS-1215 test rig (uses YCS-21/150).
Key Features
- Yale ChroMo-Design: chromium-molybdenum steel, heat treated.
- Large Centre Hole Diameter: 20 to 80 mm depending on model.
- 700 bar Maximum Operating Pressure: Yale standard.
- Single-Acting with Spring Return: automatic retraction.
- 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 of the hollow design.
- 3/8 NPT Oil Port: CFY-1 female coupler included.
- Carrying Handles or Lifting Rings: from YCS-21/150 with carrying handle; from YCS-57/70 with two lifting rings.
Technical Specifications
| Operating Pressure |
700 bar maximum |
| Action |
Single-acting with spring return |
| Construction |
Yale ChroMo-Design |
| Oil Port |
3/8 NPT |
| Coupler Half Included |
CFY-1 |
| Centre Hole Diameter |
20 - 80 mm (model-dependent) |
| Capacity Range |
12 - 93 tonnes (120 - 930 kN) |
| Stroke Range |
40 - 150 mm |
| Standard Models |
9 |
Frequently Asked Questions
Q: What rod can pass through the YCS centre hole?
Centre hole diameters range from 20 mm (YCS-12 models) to 80 mm (YCS-93). Select a rod with adequate clearance through the centre hole.
Q: From which YCS model are carrying handles fitted?
Yale fits a carrying handle from YCS-21/150 upward. Two lifting rings are fitted from YCS-57/70 and larger.
Q: Are dirt wipers fitted to both bores?
Yes. The YCS uses both inner and outer dirt wipers, protecting both the piston bore and the centre rod bore from dirt ingress.
Q: What's the typical use case?
Yale lists prestressing anchor bolts, removing axles/shafts/bushings, extracting tubes, and heavy-duty pulling. The YCS is the power component in Yale's puller sets and test rigs.
