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Z6 Keyless Locking Assembly – Expansion Sleeve with High Torque & Zero Backlash
We offer worldwide shipping with various delivery options. Shipping costs and estimated delivery times depend on your location and the service you choose at checkout.
To learn more about our shipping options and delivery times, read our shipping policy.






We accept a wide range of secure payment methods for your convenience, including major credit cards, digital wallets, and other popular local payment methods.

No prepayment is required for your order. However, note that some custom or special-order items may require a prepayment. We will inform you of any such requirement during the ordering process.

Your satisfaction is important to us. If you are not completely satisfied with your purchase, you may be eligible for a refund or exchange. Please note that certain conditions and exceptions apply
Learn more about our policy for a detailed information.
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Secure your rotating components with precision using the Z6 Expansion Sleeve. The sleeve utilizes a double-taper cone design to create a powerful mechanical interference fit between the shaft and the hub.
How It Works: When the high-strength bolts are tightened, the inner and outer cone rings slide against each other, generating uniform radial pressure. This pressure locks the hub such as a gear, pulley, or sprocket tightly to the shaft, transmitting high torque and axial loads purely through friction.
SELF-CENTERING DESIGN: The internal cone structure automatically centers the hub on the shaft during tightening. This ensures high concentricity, reducing runout and vibration for smoother machine operation.
HIGH TORQUE TRANSMISSION: Capable of transmitting heavy torque and axial loads securely. The uniform pressure distribution prevents slippage even under shock loads.


KEYLESS CONNECTION: Eliminates the need for machining keyways or splines. This simplifies manufacturing, lowers costs, and preserves the full strength of the shaft.
ZERO BACKLASH: Creates a rigid, gap-free connection that eliminates mechanical play. Perfect for precision motion control and reversing drives.


| Expansion sleeve model | Z6 |
|---|---|
| Material | 45# Steel / Alloy Steel |
| Structure | Heavy Duty Taper Lock |
| Shaft Tolerance (Rec.) | h8 |
| Hub Tolerance (Rec.) | H8 |
| Surface Roughness | Ra ≤ 3.2 µm |
| Self-Centering | Yes |
We offer worldwide shipping with various delivery options. Shipping costs and estimated delivery times depend on your location and the service you choose at checkout.
To learn more about our shipping options and delivery times, read our shipping policy.






We accept a wide range of secure payment methods for your convenience, including major credit cards, digital wallets, and other popular local payment methods.

No prepayment is required for your order. However, note that some custom or special-order items may require a prepayment. We will inform you of any such requirement during the ordering process.

Your satisfaction is important to us. If you are not completely satisfied with your purchase, you may be eligible for a refund or exchange. Please note that certain conditions and exceptions apply
Learn more about our policy for a detailed information.
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