140H-8R 1FY50BB70-ABAH2-L Parker TAIYO Cylinder

Product Overview

The 140H-8R 1FY50BB70-ABAH2-L belongs to the Parker TAIYO 140H-8R heavy-duty metric hydraulic cylinder series.

Parker TAIYO’s official catalog defines the 140H-8R as a 14 MPa double-acting switch-set hydraulic cylinder available with bore sizes from Ø32 to Ø125 mm. The series incorporates a high-performance cushioning system designed to reduce end-of-stroke impact.

From the Parker TAIYO ordering system, the supplied model can be identified with the following core configuration:

• 140H-8R: 14 MPa switch-set cylinder series
• FY: rod rectangular flange mounting
• 50: Ø50 mm bore
• B: Type-B rod
• 70: 70 mm stroke
• AB: cushioning at both ends

The AH2 and L suffixes are part of the complete ordering configuration, but the current public Parker catalog does not expose enough information to safely decode every field of this exact combination. They should therefore be verified against the original nameplate or Parker order documentation before procurement.

Our replacement cylinders are manufactured to the complete ordering code and installation geometry, followed by 100% simulated operating-condition testing covering pressure performance, sealing, reciprocating operation, cushioning and switch functionality.

Technical Specifications

• Manufacturer: Parker TAIYO
• Series: 140H-8R
• Product Type: Heavy-Duty Metric Double-Acting Hydraulic Cylinder
• Cylinder Version: Switch Set Cylinder
• Complete Model: 140H-8R 1FY50BB70-ABAH2-L
• Nominal Pressure: 14 MPa
• Maximum Allowable Pressure: 18 MPa
• Proof Test Pressure: 21 MPa
• Bore Diameter: Ø50 mm
• Rod Type: B
• Stroke: 70 mm
• Mounting Style: FY / Rod Rectangular Flange
• Cushioning: AB / Both Ends Cushioned
• Working Speed for Ø50 Bore: 8–400 mm/s
• Working Fluid: Petroleum-Based Hydraulic Fluid
• Cylinder Tube: Carbon Steel for Machine Structural Use
• Piston: Grey Cast Iron
• Piston Rod: Carbon Steel for Machine Structural Use
• Bush: Copper Alloy
• Tie Rod: Chrome Molybdenum Steel
• Piston Packing: Urethane Rubber
• Rod Packing: Urethane Rubber
• Dust Wiper: Urethane Rubber
• Cover Seal: Nitrile Rubber
• Displacement: Not applicable
• Rotational Speed: Not applicable

These specifications are taken from the Parker TAIYO 140H-8R official catalog.

Key Technical Advantages

14 MPa Heavy-Duty Hydraulic Platform

The 140H-8R is designed for 14 MPa hydraulic service, with an 18 MPa maximum allowable pressure and 21 MPa proof-test pressure. Parker explicitly distinguishes these three pressure definitions, so they should not be collapsed into a single “working pressure” specification.

Ø50 mm Bore and 70 mm Stroke

The theoretical piston area of a Ø50 mm cylinder is approximately 1,963.5 mm².

Theoretical hydraulic force can be estimated by:

F = P × A

At 14 MPa, the ideal cap-end force is approximately 27.5 kN, before losses caused by friction, pressure drop and dynamic effects.

FY Rod-Flange Mounting

Parker TAIYO identifies FY as a rod rectangular flange mounting style. This configuration is suitable for machines requiring controlled rod-end positioning and a rigid mechanical mounting interface.

Both-End Cushioning

The AB configuration corresponds to cushioning at both ends within the 140H-8R ordering system. Parker states that the high-performance cushion reduces end-of-stroke shock and uses an adjustable cushion valve.

Industrial Material Construction

Parker TAIYO specifies:

• Carbon-steel cylinder tube
• Grey cast-iron piston
• Carbon-steel piston rod
• Copper-alloy bush
• Chrome-molybdenum-steel tie rods

This combination balances structural strength, wear resistance and guide performance for industrial hydraulic service.

Application Areas

• Machine Tools
• Hydraulic Presses
• Industrial Automation
• Material Handling Machinery
• Metal Processing Equipment
• Hydraulic Clamping Systems
• Production Machinery
• Industrial Positioning Systems
• General-Purpose Hydraulic Equipment

Expert Maintenance Tips

Verify FY Mounting Alignment

FY is a rod-side rectangular flange arrangement. Maintain correct flange parallelism and cylinder-axis alignment to minimize:

• Rod bending
• Guide wear
• Seal wear
• Uneven friction

Keep Pressure Below 18 MPa

The 14 MPa nominal pressure should not be confused with the 18 MPa maximum allowable pressure. Load inertia can create pressure spikes, which must remain below the manufacturer’s allowable limit.

Adjust the Cushioning

For the AB both-end cushioning configuration, adjust the cushion valve according to actual load inertia and operating speed. Parker designed the series with adjustable high-performance cushioning.

Verify Ø50 Bore Operating Speed

For the Ø50 bore, Parker gives a working speed range of 8–400 mm/s. High-speed applications should additionally be checked for load inertia, hydraulic flow capacity and end-of-stroke cushioning.

Confirm Switch Configuration

Because 140H-8R is a switch-set cylinder, verify the original sensor symbol, sensor quantity and sensor arrangement before ordering a replacement.