Bonet Lever Operated Watch Maker Chucks (LOW-3) Size 50
The Bonet Lever Operated Watch Maker Chuck provides secure, self-centering clamping for precision lathe operations. This Size 50 model features a durable steel body and a 12.5 mm bore to accommodate small workpieces with high accuracy. • Series: LOW 3 • Item Code: 5142-503 • Bore: 12.5 mm • Material: Steel
Specifications
For: Size 50- Product Type
- Lever Operated Self Centering chuck
- Size
- 50
- Series
- LOW 3
- Bore (mm)
- 12.5
- Item Code
- 5142-503
- Body
- Steel
Configurations
Click a row to switch| Variant | Body | Bore (mm) | Item Code | Series | Price |
|---|---|---|---|---|---|
| Size 50 | Steel | 12.5 | 5142-503 | LOW 3 | ₹7,300 |
| Size 60 | Steel | 15 | 5142-603 | LOW 3 | ₹7,300 |
Durability and Maintenance
- Hardened steel body resists wear over time
- Simple mechanical design requires little upkeep
- Easy to clean debris from chuck jaws
- Lubricate moving parts for smooth lever action
- Inspect jaws regularly for signs of wear
- Store in dry environment to prevent corrosion
- Replace worn jaws to maintain precision grip
Ideal Applications in Horology
- Precision turning of watch case components
- Machining delicate gear wheels and pinions
- Finishing operations on precious metal parts
- Assembly line preparation for movement parts
- Repair work requiring minimal surface damage
- High-volume production of small intricate parts
- Quality control testing fixtures for timepieces
Precision Holding Mechanism
- Quick lever action for rapid jaw adjustment
- Uniform pressure distribution across workpiece
- Minimizes deformation of soft or thin materials
- Enables fast setup times for batch production
- Secure grip prevents slippage during machining
- Ergonomic handle reduces operator fatigue
- Consistent clamping force for repeatable results
Key Features of Bonet LOW-3 Series
- Product Type: Lever Operated Watch Maker Chuck
- Series Designation: LOW 3 for consistent performance
- Robust Steel Body construction for longevity
- Precision engineering for delicate watch components
- Item Code reference: 5142-503 for cataloging
- Available in Size 50 with specific bore dimensions
- Bore size 12.5 mm ensures secure part holding
- Ideal for high-precision lathe operations
Optional Accessories
spare parts available on request
Standard Accessories
The body of this chuck is made of STEEL .These are mainly used in watch making industry to grip small parts . only one set of jaw is provided with each chuck which is reversible . there is a thread in the bore for mounting the chuck
More questions buyers ask
What is a lever-operated watchmaker chuck?
It is a precision workholding device designed for lathes, allowing rapid opening and closing of jaws via a lever for high-speed, repetitive watch component machining.
What materials are Bonet LOW-3 chucks made of?
These chucks are constructed from high-grade hardened steel to ensure durability, wear resistance, and long-term precision in delicate machining tasks.
Are these chucks self-centering?
Yes, the Bonet LOW-3 series features a self-centering mechanism that ensures uniform pressure distribution across the workpiece, minimizing deformation.
What industries use these chucks?
Primarily used in the horology (watchmaking) industry, they are also suitable for any precision engineering task involving small, intricate parts.
Does the chuck come with jaws?
Yes, each chuck includes one set of reversible jaws designed for secure gripping of small components.
How do I mount the chuck?
The chuck features a threaded bore specifically designed for secure mounting onto compatible watchmaker lathes.
What is the bore size of the LOW-3 series?
The bore size varies by model; for instance, the Size 50 model has a 12.5mm bore, while the Size 60 model offers a 15mm bore.
Is maintenance required for these chucks?
Yes, regular lubrication of moving parts and cleaning of debris from the jaws is recommended to maintain smooth lever action and precision.
Can these be used for high-volume production?
Absolutely. The quick lever action is specifically designed to reduce setup times, making them ideal for batch production and assembly line tasks.
Are spare parts available?
Yes, spare parts for Bonet chucks are available upon request to ensure your equipment remains operational.
Who should choose the Size 50 Bonet Chuck?
The Size 50 model is ideal for users requiring a 12.5mm bore capacity for smaller, highly delicate watch components.
Who should choose the Size 60 Bonet Chuck?
The Size 60 model is best for users needing a slightly larger 15mm bore capacity for more versatile small-part machining.
How does the LOW-3 series compare to standard lathe chucks?
Unlike standard heavy-duty chucks, the LOW-3 series is specifically engineered for horology, offering lighter weight, higher sensitivity, and faster lever-operated clamping.
Is the lever action durable?
Yes, the mechanical design is simple and robust, built to withstand frequent use in professional watch repair and manufacturing environments.
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Full description
The Bonet Lever Operated Watch Maker Chuck provides secure, self-centering clamping for precision lathe operations. This Size 50 model features a durable steel body and a 12.5 mm bore to accommodate small workpieces with high accuracy. • Series: LOW 3 • Item Code: 5142-503 • Bore: 12.5 mm • Material: Steel



