UNIVER has released a rodless cylinder range consisting of the S1, S5 and VL. The S1 is a basic rodless cylinder while the S5 is a the mid-range rodless cylinder with a guided carriage and technopolymer bearings which are flexible and reduce noise. The VL has a guided cylinder with a rigid ball bearing system. This is suitable for heavy duty/fast applications.
All of the cylinders are available in 25mm, 32mm, 40mm and 50mm bore sizes and can be made up to a maximum of 6m in stroke. The S1 series is also available in 16mm bore, which is compact and designed for light loads and high-speed applications.
Univer strip-seal is moulded around a Kevlar cord to provide high axial strength equivalent to 25mm steel. The system guarantees dimensional stability even with high translation speeds. The external protection seal consists of a thermoplastic stripseal which eliminates stretch problems normally associated with conventional rodless cylinders.
No special tools are required to strip down the cylinders for maintenance purposes. The stretch-resistant strip seals can be replaced using a screwdriver to remove retaining clips.
The cylinders are fitted with double lip seals which automatically self-compensate against wear. Pneumatic adjustable cushions with two regulations screw in each end-cap. This allows for improved regulation of piston deceleration. Mechanical rubber shock absorbers also aid in the reduction of stress and machinery noise.
In a system with moving masses, as in the case of rodless cylinders, it is essential to control the dissipation of the system's kinetic energy as it is brought to a stop. In order to dampen the kinetic energy developed Univer recommends the use of a group LX series of Univer valves. The LX valves have a throttling function enabling two operational speeds; high running speed and slow approach speed.