Products

TWQ series Stopper Cylinder

Complies with JIS standards;
Features a thickened piston rod, effectively enhancing the cylinder’s impact resistance;
Offers fixed mounting dimensions and a variety of rod-end configurations; models equipped with hydraulic shock absorbers provide superior cushioning performance;
Lever-type roller stopper cylinders feature a self-locking mechanism to prevent the rocker arm from rebounding and pushing back against the stopped object;
A wide range of stopper cylinder series and specifications is available to meet diverse customer needs.

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TWQ series Stopper Cylinder: Fixed-height blocking cylinder (slim square body)—a cylinder for stopping assembly line carriers; features a compact design and non-adjustable mounting height.

Operating principle: Air pressure extends the piston rod to block the workpiece pallet; reversing the airflow retracts the rod to release the workpiece.
Available in double-acting and single-acting (retraction-driven) types:
1. Double-acting: Dual air ports control extension and retraction.
2. Single-acting (retraction-driven): Air pressure retracts the rod; cutting off the air supply allows a spring to automatically extend the stop.

Various rod end types available: cylindrical (C), flat cylindrical (B), roller (R), and lever-type roller with adjustable hydraulic shock absorber (K).
A self-locking mechanism is available as an option: the lever-type roller stopper cylinder is equipped with a self-locking device that prevents the rocker arm from rebounding and pushing back against the blocked object.
A thickened piston rod effectively enhances the cylinder’s resistance to impact.
Can be equipped with a magnet (magnetic ring).

Technical Specifications

Bore diameter (inner diameter mm)		20	25	32	40	50
Action Type		Double-acting type, single-acting pilot-operated type
Working Medium		Air (filtered through a 40 µm mesh screen)
Operating pressure range	Double-acting type	0.15~1.0Mpa(23~145psi)
	Single-acting push-type	φ20：0.25~1.0Mpa(35~145psi) Other：0.2~1.0Mpa(28~145psi)
Guaranteed pressure resistance		1.5Mpa（215psi)
Operating Temperature		-20°C~70°C
Travel tolerance range		+1.0
Cushioning type		Anti-collision pad
lubricating		No
Installation Method		Through-hole, internally threaded at both ends
Blocking method		Cylindrical, flat cylindrical, roller,		Cylindrical, flat cylindrical, roller, and roller lever types (with adjustable cushioning)
Connection port size		M5*0.8		PT1/8