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Z13 Keyless Locking Assembly – High Torque Steel Expansion Sleeve
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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Z13 Expansion Sleeve made for the most demanding mechanical transmission systems and delivers unmatched reliability under extreme conditions.
Unlike standard locking assemblies, the Z13 is optimized for environments requiring high rotational speeds and heavy loads. Its robust design ensures a secure, zero-backlash friction fit that eliminates the wobbling and fretting often seen in keyed connections under dynamic stress.
EXCEPTIONAL TORQUE TRANSMISSION: Optimized structure ensures maximum surface contact pressure, providing superior torque handling capabilities for heavy-duty industrial drives.
HIGH SPEED STABILITY: The self-centering design ensures excellent concentricity, minimizing vibration and runout even at high rotational speeds.


RAPID INSTALLATION & REMOVAL: Designed for flexibility in complex operating conditions. The assembly can be locked or released quickly using standard tools, making maintenance hassle-free.
EXTENDED EQUIPMENT LIFE: The friction-based connection prevents mechanical wear and “notch effect” damage to the shaft and hub, ensuring long-term reliability.


| Expansion sleeve model | Z13 |
|---|---|
| Self-Centering | Yes |
| Material | 45# Steel / Alloy Steel |
| Structure | Heavy Duty Taper Lock |
| Shaft Tolerance (Rec.) | h8 |
| Hub Tolerance (Rec.) | H8 |
| Surface Roughness | Ra ≤ 3.2 µm |
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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