II 2 GD c 120 °C (T4) -20 °C ≤ Ta ≤ +80 °C Coupling suitable for use in potentially explosive atmospheres. Complies with the current ATEX Directive for: Benefits A ZAPEX coupling comprises two hub sections with external teeth which are mounted on the machine shafts. Each set of external teeth engages in a flanged socket with mating internal teeth. The flanged sleeves are connected via two flanges with close-fitting bolts. Application The teeth are lubricated with oil or grease. On the ZAPEX type ZW, DUO sealing rings are used to seal the tooth space. The DUO sealing rings prevent the lubricant from escaping and dirt from entering the tooth space. The parallel keyways must be sealed during assembly to prevent lubricant fromescaping. Customized hub designs are described after the types. Function ZAPEX couplings are especially suited for operation in harsh operating conditions, such as drives in the iron smelting or cement industry. ZAPEX couplings are suitable for reverse operation and horizontal mounting positions and, in the case of type ZWNV, for vertical mounting positions. The torque is transmitted through the coupling teeth. The teeth are crowned, so angular displacement per tooth plane is possible. Radial displacement can be compensated for via the space VA between the tooth planes. The internal teeth of the flanged sleeves are significantly wider than the external teeth of the hub parts, permitting a relatively high axial misalignment. A small angular misalignment on the coupling teeth results in an advantageous distribution of the lubricant film and a very low wear rate. This favourable condition can be deliberately set by aligning the drive with themachine shafts with a slight radial misalignment. Design I M2 ZAPEX gear couplings link machine shafts and compensate for shaft misalignment with weak restorative forces. High transmissible torque combined with compactness and light weight are characteristic of ZAPEX couplings. ZAPEX coupling types are constructed on a modular principle. This means that application specific solutions can be delivered quickly. ZAPEX couplings require very little maintenance. Regular grease or oil changes at the prescribed intervals prolongs the service life of the coupling. 1 #DriveLineHarmony Zapex ZW Series Introduction Torsionally Rigid Gear Couplings ZWB with brake drum ZBR with shear pins Zapex ZW Gear Coupling Types Type Description: ZWTR for rope drums ZWH with coupling sleeve ZZW with intermediate shaft ZWBT with offset brake disk ZZS with adapter ZWNV Vertical type ZWS Clutch Further application-related coupling types are available. ZWN Standard type Information available on request. ZWBG with straight brake disk ZWSE Simple clutch-coupling combination www.jbj.co.uk/couplings.html#flender
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