SMC ZPT50BNK20-T01-A14 | ZP Series Basic Bellows Vacuum Pad 50mm Vertical Inlet With Buffer NBR Rubber 20mm Stroke Rc 1/8 Thread

The SMC ZPT50BNK20-T01-A14 is a large bellows type vacuum pad from the ZP series, featuring a 50mm pad diameter with NBR rubber construction, vertical vacuum inlet, and 20mm buffer stroke. The 50mm diameter places this pad in the upper mid-range of the ZPT series, generating substantial vacuum holding force for reliable gripping of medium to large flat and moderately contoured workpieces in industrial automation applications.

What connection type does the ZPT50BNK20-T01 use? The "T01" specification designates an Rc 1/8 (PT 1/8) thread connection, a metric taper pipe thread commonly used in Japanese and international pneumatic systems. This threaded interface provides a secure, vibration-resistant vacuum connection suitable for permanent installation in production equipment where reliability over extended operational periods is essential.

The 50mm bellows pad delivers significant angular compliance, enabling reliable vacuum seal formation on workpieces that may not be perfectly perpendicular to the pad approach axis. This is particularly valuable when handling slightly warped sheet materials, thermoformed trays, or components with gentle surface curvature. NBR (nitrile rubber) provides dependable sealing and oil resistance within 0°C to +70°C for standard industrial environments.

The 20mm buffer stroke ("K20") adds controlled Z-axis compliance, and the "A14" buffer body is sized for the larger 50mm pad class to ensure stable, wobble-free buffer action. This pad is RoHS compliant and designed for integration with SMC vacuum generators, filters, pressure switches, and control valves for complete vacuum system construction.