A Thada Collet is a traditional heavy-duty Workholding collet widely used in Indian automatic lathes, capstan lathes, turret lathes, and SPM machines.
It is specially designed for strong gripping force, durability, and economical mass production.
Thada collets are preferred where rugged construction and long life are more important than ultra-fine accuracy.
Key Features
Strong mechanical gripping force
Simple & robust design
Suitable for continuous production
Easy maintenance and replacement
Cost-effective for Indian machine tools
Available in round, hex, square & step types
Thada Collet – Dimension Details (Typical Range)
|
Parameter
|
Standard Range
|
|
Collet Type
|
Thada Collet
|
|
Outer Diameter (OD)
|
25 – 65 mm
|
|
Overall Length (L)
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45 – 100 mm
|
|
Clamping Capacity
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3 – 45 mm
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|
Nose Angle
|
30°
|
|
Grip Type
|
External gripping
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|
Accuracy (TIR)
|
≤ 0.01 mm
|
📌 Exact OD, length, and bore are normally manufactured as per machine spindle and job requirement.
Construction Details

Material: Spring Steel
Heat Treatment: Hardened & tempered
Slots: Straight / angular slit design
Finish: Bore ground or semi-ground as required
Types of Thada Collets
Round Thada Collet
Hex Thada Collet
Square Thada Collet
Step Thada Collet
Special profile Thada Collet
Applications
Indian automatic lathes
Capstan & turret lathes
SPM machines
Fasteners, pins, bushes
Brass, MS & aluminum components
Supply Options
Standard & custom sizes
Hardened or soft (machinable)
Made as per drawing or sample
Suitable for manual & semi-automatic machines