Z3B Locking Assembly

Z3B Locking Assembly

Product Introduction

The Z3B Locking Assembly is a heavy‑duty, self‑centering keyless shaft‑hub locking device. It provides zero‑backlash friction locking without keyways, splines, or shrink fits. Tightening the high‑strength 12.9 bolts uniformly expands the inner and outer rings against the shaft and hub, delivering reliable torque transmission.

Key Features

Higher torque density – Up to 30% more torque capacity than standard Z3 at the same outer diameter

Wide clamping range – Works with larger shaft tolerances (h8/h9) without performance loss

Self‑centering & backlash‑free – Maintains ≤0.02 mm concentricity for precision drives

Easy assembly – Only a torque wrench required; no heating, pressing, or hydraulics

Reversible & reusable – Withstands reversing loads and allows multiple reassemblies

Interchangeable – Direct replacement for TLK130, KLDA, RCK70, LOCK4, and other Z3B‑style locking assemblies

Typical Applications

Conveyor drives, belt pulleys, sprockets

Gearboxes, speed reducers, couplings

Packaging and labeling machines

Woodworking equipment, printing presses

Industrial fans, pumps, blowers

Specfications:

Customer satisfaction:

FAQS:

1. Do I need to machine keyways or splines?
No. The Z3B is a keyless locking device – it creates a friction lock directly on the shaft and hub.

2. What tools are required for assembly?
Only a torque wrench. No heating, pressing, or hydraulics are needed.

3. Can it handle reversing loads?
Yes. The assembly is reversible and reusable, and withstands reversing torque without loosening.

4. What shaft tolerances does it accept?
It accommodates h8/h9 shaft tolerances without performance loss.

5. Is the Z3B interchangeable with other brands?
Yes. It directly replaces TLK130, KLDA, RCK70, LOCK4, and other major Z3B‑style locking assemblies.

6. How accurate is the concentricity?
Self‑centering design maintains ≤0.02 mm concentricity, ideal for precision drives.

Robin Cheu

Marketing Manager

sales@shangxincaster.com

Ningbo Shangxin Caster Wheels

No.187, Langxia street, Yuyao city, Ningbo, Zhejiang, China.

Tel. +86 0574-62188162

Whatsapp/Mob. +86 152 5836 8162

Wechat: robin-cheu

www.shangxincaster.com

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