Z1 Locking Assembly

Z1 Locking Assembly

Product Brief

Z1 Locking Assemblies are precision-engineered keyless shaft-hub locking devices designed for high-torque transmission and zero-backlash operation. By tightening the clamping screws, the inner and outer conical rings expand simultaneously, creating a powerful friction-locked connection that completely eliminates the need for keys or keyways.

Key Features

Keyless Connection – No keyways means no stress concentration, no backlash, and no wear.

Zero Backlash Transmission – Ensures high positioning accuracy, ideal for servo-driven and precision motion systems.

Compact & Lightweight – Requires minimal installation space while delivering high torque capacity.

Easy Assembly & Disassembly – Simple screw tightening and jacking screw removal reduce downtime.

Maintenance-Free Operation – No lubrication needed during service life.

Overload Protection – Slipping occurs at preset torque limits, protecting connected equipment.

Typical Applications

Gears, chain sprockets, belt pulleys, brake discs

Couplings, flanges, cam discs, levers

Precision transmissions, servo mechanisms, automation equipment

Machine tools, packaging machinery, conveyor systems

Specfications:

Customer satisfaction:

FAQS:

Q1. What is a Z1 Locking Assembly?
A keyless shaft-hub locking device consisting of inner and outer conical rings. It transmits torque through friction created by tightening clamping screws, eliminating the need for keys or keyways.

Q2. What are the main advantages of Z1 Locking Assemblies?
Zero backlash transmission, easy assembly and disassembly, no wear during operation, maintenance-free, compact structure requiring minimal installation space, and no stress concentration on the shaft.

Q3. What materials are Z1 Locking Assemblies made of?
Typically #45 steel (C45), 40Cr steel, or GCr15 bearing steel. Clamping screws are usually Grade 12.9 high-strength bolts. Surface treatment includes grinding and burnishing.

Q4. How do you install a Z1 Locking Assembly?
Clean all contact surfaces, apply light lubricant (no MoS₂), slide the assembly into the hub bore, then tighten clamping screws crosswise and symmetrically in multiple steps (e.g., 1/3 → 1/2 → full torque) using a torque wrench.

Q5. How do you disassemble a Z1 Locking Assembly?
Loosen all clamping screws (do not fully remove them), then screw jacking screws into the auxiliary threaded holes on the front pressure ring, and gently tap the transmission component to release the expansion ring, then pull the assembly out.

Q6. Does Z1 Locking Assembly provide overload protection?
Yes. When the preset torque is exceeded, the locking assembly will slip, preventing damage to connected equipment. However, excessive slip may cause damage, so it is not a friction coupling.

Q7. What applications are Z1 Locking Assemblies suitable for?
Precision fastening of hubs, gears, chain sprockets, pulleys, brake discs, couplings, and flanges on shafts and axles. Ideal for high-precision transmission, servo mechanisms, and heavy-duty machinery.

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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