| Stroke | 1 mm ... 320 mm | ||
| Torsional backlash at piston rod +/- | 0,5 deg | ||
| Mounting position | optional | ||
| Design | Piston Piston rod | ||
| Symbol | 991.217 | ||
| Protection against torque/guide | Oval piston | ||
| Operating medium | Compressed air to ISO 8573-1:2010 [7:4:4] | ||
| Corrosion resistance class CRC | 2 - Moderate corrosion stress | ||
| Max. torque for protection against torsion | 1,2 Nm | ||
| Theoretical force at 0.6 MPa (6 bar, 87 psi), advance stroke | 1.178 N | ||
| Additional moving mass per 10 mm stroke | 25 g | ||
| Basic weight for 0 mm stroke | 854 g | ||
| Pneumatic connection | G1/4 | ||
| Material seals | FPM | ||
| Material piston rod | High-alloy steel |
| Piston diameter | 50 mm Equivalent diameter | ||
| Cushioning | Elastic cushioning rings/plates at both ends | ||
| Mode of operation | Double-acting | ||
| Position detection | Via proximity switch | ||
| Variants | Heat-resistant seals max. 120°C | ||
| Operating pressure | 1 bar ... 10 bar | ||
| Note on operating and pilot medium | Lubricated operation possible (in which case lubricated operation will always be required) | ||
| Ambient temperature | 0 °C ... 120 °C | ||
| Theoretical force at 0.6 MPa (6 bar, 87 psi), return stroke | 990 N | ||
| Moving mass for 0 mm stroke | 219 g | ||
| Additional weight per 10 mm stroke | 64 g | ||
| Type of mounting | Via female thread With accessories Either: | ||
| Material cover | Wrought aluminium alloy | ||
| Material housing | Aluminium Smooth anodised |
