JIYAN H138‑1Y Pneumatic Zero Point Clamp – Round
A large round zero point clamp (Ø188×53 mm) with Ø138 mm center through‑hole, ±0.005 mm repeatability, 55 kN pull‑down force, and single‑port pneumatic activation. Ideal for CNC rotary tables, pallet automation, 4th/5th axis workholding, and applications requiring pass‑through coolant or utilities.
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| Parameter | Value |
|---|---|
| Model | H138‑1Y |
| Type | Single hole zero point clamp (round) |
| Outer diameter | 188 mm (7.40″) |
| Height | 53 mm (2.09″) |
| Repeat positioning accuracy | ±0.005 mm (±0.0002″) |
| Max. operating pressure (air) | 1.2 MPa (174 psi) |
| Pull‑down force (at 0.6 MPa) | 55 kN (12,364 lbf) |
| Clamping force (at 0.6 MPa) | 17 kN (3,822 lbf) |
| Center through hole | Ø138 mm (5.43″) |
| Mounting hole circle | Refer to drawing (113 mm / 98 mm / Ø111 etc.) |
| Actuation | Pneumatic (single port) |
Note: Drawing shows additional dimensions (113, 98, Ø11, 18, 8, 100, 50, 50, Ø138). Please refer to the original product drawing for exact mounting hole positions and bolt specifications.
Single pneumatic port activation – simple on/off control for independent zero‑point clamping
High repeatability – ±0.005 mm (0.0002″) for fast and accurate pallet changes
Large round compact design – Ø188 mm × 53 mm height, ideal for rotary tables and indexers
Large center through hole – Ø138 mm opening accommodates coolant, air lines, cables, or large locating pins
Heavy pull‑down & clamping force – 55 kN (12,364 lbf) pull‑down / 17 kN (3,822 lbf) clamping
High max. air pressure – 1.2 MPa (174 psi) for robust industrial use
Hardened steel construction – wear‑resistant, suitable for high‑duty cycles
Low profile – only 53 mm height saves Z‑axis clearance
CNC rotary tables & 4th/5th axes – low‑profile round shape mounts easily on indexers
Automated pallet systems – quick and repeatable zero‑point locking for robotic cells
Horizontal machining centers (HMCs) – large through‑hole allows pass‑through coolant or air
EDM and precision grinding – clean pneumatic operation, no hydraulic oil mess
Parts with central locating features – large Ø138 through‑hole accommodates pins, cables, or coolant hoses
Large diameter workpieces – 188 mm outer diameter provides stable support for oversize parts
Through‑spindle coolant applications – center hole allows coolant to pass through fixture
Large through‑hole advantage – Ø138 opening allows pass‑through of utilities, reduces fixture complexity
Precision ground locating surfaces – each unit verified for flatness and repeatable lock‑up
Compact round form factor – fits standard bolt circles on many rotary tables
Low profile – only 53 mm height saves valuable Z‑axis stroke on CNC machines
High clamping force in small height – 55 kN pull‑down in a 53 mm tall package
Pneumatic only – no hydraulic power unit required, reduces cost and complexity
Custom adapter plates available – for non‑standard mounting patterns