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Actuators – CJT Series Yuken Cylinders

更新时间：2026-05-07 15:08:52

YUKEN CJT Series Hydraulic Cylinders are versatile, high-performance linear actuators designed for general industrial machinery, particularly machine tools, with multiple mounting options and advanced features for precise control.

Core Product Overview

The CJT Series consists of compact double-acting hydraulic cylinders with variants optimized for different pressure ratings and applications. Key offerings include:

Series	Pressure Rating	Key Features
CJT35	3.5 MPa (510 psi)	Standard-duty, cost-effective
CJT70	7 MPa (1020 psi)	Medium-duty, balanced performance
CJT140	14 MPa (2030 psi)	Heavy-duty, industrial-grade
CJT210	21 MPa (3050 psi)	High-pressure, robust design
CJT210C	21 MPa (3050 psi)	Compact version, space-saving
CJT*L	Various	With slide-type proximity switches for position detection
CJT*PS	Various	With position sensing (analog/digital output)

Technical Specifications

Parameter	Value Range	Notes
Cylinder Bore	32–250 mm (standard)	Φ40–Φ200 mm common sizes
Piston Rod Diameter	18–180 mm	L: standard rod; H: heavy-duty rod
Max. Operating Pressure	Up to 21 MPa (standard); 25 MPa (custom)	Higher pressures available on request
Max. Stroke	Up to 2,000 mm (standard)	Longer strokes available with customization
Speed Range	8–400 mm/s	Depends on viscosity and load conditions
Temperature Range	-20°C to +80°C (NBR); -15°C to +200°C (FKM)	Seal material dependent
Sealing System	Step-seal structure	Leakage ≤5 drops/min (ISO standard)
Repeatability	≤±0.5 mm (with position sensor)	Precision positioning capability

Key Features & Benefits

Multiple Mounting Options
1. Flange (FA/FE): ISO 6020-14 compliant (4/8 holes)
2. Trunnion (LB): Self-lubricating bearings (ISO 6022)
3. Foot (FB): Stable base mounting
4. Clevis (FC/FD): Pivoting motion capability
5. Custom options available for specialized applications
Position Detection Capabilities
1. *CJT\L: Slide-type proximity switches on cylinder body
2. *CJT\PS: Magnetic position sensing with analog/digital output
3. Eliminates external position sensors, simplifying installation
Advanced Design Elements
1. Adjustable Cushioning: Both ends (B designation) for smooth deceleration
2. Throttle Valves: Optional (T designation) for flow control
3. High-Strength Construction: Hard-chrome plated piston rods, durable cylinder tubes
4. Interchangeability: CJT*PS models compatible with standard CJT series

Model Decoding Example

CJT140L-20-FE40B-500:

CJT: Series (compact double-acting)
140: Bore diameter (140 mm)
L: Rod strength (standard)
20: Rod diameter (20 mm)
FE: Mounting (square flange)
40: Pressure rating (40 MPa)
B: Both ends adjustable cushion
500: Stroke (500 mm)

Applications

Machine Tools: Lathes, milling machines, presses
Plastic Injection Molding: Clamping units, ejectors
Automation Systems: Material handling, assembly lines
Metal Forming: Stamping, bending, cutting
General Industry: Any application requiring precise linear motion with high force

Ordering Considerations

Seal Material: NBR (standard) or FKM (high-temp/corrosive)
Mounting Type: Select based on installation requirements
Cushioning: Fixed or adjustable (B/T designations)
Position Sensing: Standard (no switch), CJTL (proximity), or CJTPS (precision sensing)
Custom Options: Longer strokes, higher pressure ratings, special coatings

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