SV technocrats India’s Gib head keys are a type of sunk key used to connect rotating machine elements (like gears or pulleys) to a shaft, ensuring torque transmission while also allowing easier removal.

🔧 Gib Head Key – Overview

• Definition: A rectangular sunk key with a tapered body and a head (gib) at one end to assist in removal.

• Function: Transmits torque between shaft and hub and allows for easy disassembly when needed.

• Placement: Inserted in a keyway cut into both the shaft and the hub.

🧩 Key Features

• Taper: Typically a 1:100 taper (1 mm rise over 100 mm length) on the top surface.

• Gib Head: A small projecting tab or head for levering out the key during maintenance or disassembly.

• Friction Fit: The taper creates a wedging action, ensuring a tight fit and reducing backlash.

⚙️ Applications

• Heavy-duty machinery, such as:

o Gears and pulleys on power transmission shafts.

o Flywheels.

o Large couplings.

• Especially where periodic removal of components is required.

✅ Advantages

• Secure fit with good torque transmission.

• Easy removal due to gib head.

• Tapered design allows for tight engagement.

❌ Disadvantages

• Requires precise machining.

• Not suitable for sliding motion (unlike feather keys).

• Taper can lead to stress concentrations if over-tightened.

SV Technocrats India is leading supplier of all types of machinery keys in Pune.