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🔹 Product Overview
Expanding Collet Chuck (Manual) is a hand-operated internal clamping device designed to grip components from the inside diameter (ID) using a mechanical expansion mechanism. Tightening is done manually via a screw, nut, or taper, expanding the collet evenly to achieve uniform 360° internal grip.
This chuck is ideal for thin-wall parts, rings, bushes, sleeves, and bearing housings, especially in tool rooms, job shops, and small-batch production where power actuation is not required.
🔑 Key Features
- 🖐️ Manual / Hand-Operated Expansion
- 🎯 Uniform 360° Internal Clamping
- 🛠️ Low Distortion for Thin-Wall Components
- ⚙️ Job-Specific Expanding Collets
- 🔩 Good Concentricity & Repeatability
- 🔧 Simple Design, Low Maintenance
- 💰 Cost-Effective Alternative to Power Chucks
⚙️ How It Works
- Manual tightening actuates a tapered mandrel or screw
- The collet expands radially inside the component
- Provides secure internal grip without marking the OD
📐 Dimension & Mounting Reference
- Mounting via backplate / flange / fixture plate
- Custom PCD, pilot diameter & mounting length
- Supplied with front & sectional drawings (PDF/DWG)
Dimension Legend:
A – Chuck OD | B – Mounting face | C – ID clamping range |
D – Front thickness | E – Body length |
F – Expansion stroke | G – Pilot | H – Overall length
🏭 Applications
- Thin-wall rings & sleeves
- Bushes, spacers & collars
- Bearing housings & races
- CNC & conventional lathe operations
- Inspection & secondary machining
⭐ Why Choose a Manual Expanding Collet Chuck?
✔ Internal gripping without OD deformation
✔ Simple, reliable hand operation
✔ Excellent for delicate & thin-wall parts
✔ Lower cost than pneumatic/hydraulic systems
✔ Easy setup & maintenance
TYPES OF EXPANDING COLLET – TABLE FORMAT


|
No.
|
Type of Expanding Collet
|
Operation Method
|
Clamping Force
|
Best For / Applications
|
Key Advantages
|
|
1
|
Manual Expanding Collet
|
Hand-operated (screw / taper)
|
Low–Medium
|
Tool room, job shop, small batch
|
Simple, economical, low maintenance
|
|
2
|
Pneumatic Expanding Collet
|
Air-operated (4–8 bar)
|
Medium
|
CNC secondary ops, SPMs
|
Fast clamping, automation ready
|
|
3
|
Hydraulic Expanding Collet
|
Hydraulic (20–35 bar)
|
High
|
Heavy machining, mass production
|
Very high grip, stable & repeatable
|
|
4
|
Segmented Expanding Collet
|
Mechanical / Hydraulic
|
Medium–High
|
Thin-wall parts, precision rings
|
Uniform pressure, low distortion
|
|
5
|
Rubber Bonded Expanding Collet
|
Mechanical
|
Low
|
Finished ID, delicate parts
|
No marking, gentle grip
|
|
6
|
Double Taper Expanding Collet
|
Mechanical / Hydraulic
|
High
|
High concentricity machining
|
Superior centering & rigidity
|
|
7
|
Dead-Length Expanding Collet
|
Pneumatic / Hydraulic
|
Medium–High
|
Length-critical components
|
Zero axial movement
|
|
8
|
Special / Job-Specific Expanding Collet
|
As per design
|
As required
|
Non-standard ID & profiles
|
Perfect fit, custom solution
|
📌 Quick Selection Tip
- Low volume / Tool room → Manual Expanding
- Fast cycle CNC → Pneumatic Expanding
- Heavy machining → Hydraulic Expanding
- Thin-wall parts → Segmented / Rubber
- High accuracy → Double Taper / Dead-Length