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Double acting pneumatic cylinders

teleskopic, series RT

Double-acting RT series actuators consist of 2 or 3 stages, providing strokes significantly exceeding the cylinder‘s overall length. They are ideal for space-constrained applications where standard cylinders cannot be used, offering 50–60% space savings. For optimal service life, a vertical mounting position is recommended; otherwise, lower maximum strokes and speeds must be expected. Cylinders must not be exposed to side loads or torsional moments and are not suitable for dusty or abrasive environments. Operating force is limited by the smallest piston area. Stages and the piston rod are non-rotating as standard, with a rotating rod version available as an option.

Technical information

Technical data

Working pressure	0,6 MPa
Min. pressure	0,15 MPa
Max. pressure	1,0 MPa
Temp. range	-20^oC to +80^oC *
Working medium	modified compressed air

Stages	2					3
Piston diameter [mm]	25	32	40	50	63	40	50	63
Internal stages diameters [mm]	16	20	25	32	40	25+16	32+20	40+25
Thrust at 0,6 MPa [N]	123	192	300	492	769	123	192	300
Return force at 0,6 MPa [N]	65	123	231	369	649	65	123	231
Connections	M5	G1/8"	G1/8"	G1/8"	G1/8"	G1/8"	G1/8"	G1/8"
Maximum stroke [mm] in vertical position	300	400	600	900	1200	1200	1500	1800
Maximum stroke [mm] in horizontal position	150	200	300	450	600	600	750	900
Working speed [mm/s]	500
Stroke tolerance [mm]	+2,0	+3,2	+3,2	+3,2	+3,2	+4,0	+4,0	+4,0
Max. torque on non-rotating piston rod [Nm]	0,5	0,8	1,0	2,0	3,0	0,5	0,8	1,0

Construction / materials

caps: die-cast aluminium
tube: drawn dural profile, anodized
piston rod: grounded round steel bar with hard chrome plated surface, optionally stainless steel
seals and bumpers: NBR
guide slide: POM

Weight - 2 stages

Type	RT220...					RT220...M					RT223...
Piston diameter [mm]	25	32	40	50	63	25	32	40	50	63	25	32	40	50	63
Weight 0 mm stroke [kg]	0,307	0,377	0,559	0,911	1,393	—	0,392	0,568	0,917	1,402	0,310	0,380	0,537	0,876	1,300
Weight add. per 100 mm stroke [kg]	0,152	0,219	0,267	0,386	0,451	—	0,220	0,268	0,387	0,452	0,152	0,219	0,267	0,386	0,451

Weight - 3 stages

Type	RT230...			RT230...M			RT233...
Piston diameter [mm]	40	50	63	40	50	63	40	50	63
Weight 0 mm stroke [kg]	0,529	0,775	1,027	0,560	0,819	1,271	0,530	0,768	1,190
Weight add. per 100 mm stroke [kg]	0,281	0,366	0,452	0,283	0,368	0,454	0,281	0,366	0,452

Warning

Optimal performance requires axial loading in a vertical position. Otherwise, the following restrictions apply:

max. stroke reduced by 50 %
use cylinders with slide units
no radial loads on telescopic stages
max. speed 0,5 m/s

Dimension comparison

With 2-stage telescopic cylinders, up to 50% of installation space can be saved compared to standard cylinders according to ISO 15552 or VDMA 24562, while maintaining the same stroke (A). For 3-stage telescopic cylinders, the savings can reach up to 60%.