Pentagon Clock Spring Spiral Spring for M1TR Milling Machine Model Mill- B178
The Spindle Up & Down Clock Spring (also known as a quill return spring) is a key component in vertical and turret milling machines. It provides controlled tension for the spindle/quill return mechanism, ensuring smooth and stable vertical movement during machining operations. • Outer Diameter: 154 mm • Tensile Strength: 1500–1800 MPa • Load Capacity: 15–45 N • Material: High-Carbon Spring Steel (HCS) / EN47
Specifications
For: Model Mill- B178- Machine Type
- M1TR Vertical Milling machine
- Model No.
- Mill - B178
- Material
- High-Carbon Spring Steel (HCS) / EN47
- Outer Diameter
- 154 mm
- Function
- Milling Machine Spindle Up & Down Movement
- Product Type
- Clock Spring / Quill Return Spring
- Tensile Strength
- 1500–1800 MPa
- Thickness
- 0.8-1.2 mm
- Width
- 25 mm
- Load Capacity
- 15–45 N
- Compatibility
- Universal for vertical & turret milling machines (M1TR, M2TR, M3TR, RAM Type, etc.)
- Packing Size
- 50x50x30 mm
- Weight
- 0.5 kgs
Installation & Maintenance Tips
- Inspect spring for cracks or permanent deformation before installation
- Ensure mounting holes align perfectly to avoid binding or misalignment
- Lubricate contact points sparingly to prevent dust accumulation
- Replace if spring loses tension or fails to return quill fully upward
- Store in dry environment to prevent corrosion on high-carbon steel
- Verify compatibility with specific machine model before purchase
Operational Load & Dimensions
- Outer diameter measures 154 mm for proper housing fitment
- Load capacity rated between 15–45 N for balanced spring action
- Compact packing size of 50x50x30 mm for easy storage and shipping
- Net weight of 0.5 kgs ensures minimal handling effort
- Model reference Mill - B178 indicates specific design configuration
- Robust build supports heavy-duty vertical milling applications
High-Carbon Steel Construction
- Manufactured from High-Carbon Spring Steel (HCS) / EN47 grade
- Delivers high tensile strength ranging from 1500–1800 MPa
- Thickness optimized between 0.8-1.2 mm for durability and flexibility
- Width standardized at 25 mm for secure mounting and load distribution
- Resists fatigue and deformation under repeated cyclic loading
- Engineered to withstand industrial vibration and operational stress
Precision Quill Return Mechanism
- Ensures smooth up and down movement of the milling machine spindle
- Acts as a clock spring to automatically return the quill to its upper position
- Provides consistent tension for precise tool positioning during operations
- Compatible with M1TR, M2TR, M3TR, and RAM type vertical mills
- Designed for universal fitment across standard turret milling machines
- Maintains optimal spring pressure for reliable cycle performance
More questions buyers ask
What is the function of the M1TR milling machine clock spring?
The clock spring, or quill return spring, is responsible for automatically returning the milling machine spindle to its upper position after a drilling or milling operation.
What are the dimensions of this Pentagon M1TR clock spring?
This spring has an outer diameter of 154 mm, a width of 25 mm, and a thickness ranging from 0.8 to 1.2 mm.
Is this spring compatible with other milling machines besides M1TR?
Yes, it is designed for universal fitment across standard turret milling machines, including M1TR, M2TR, M3TR, and RAM-type vertical mills.
What material is the Pentagon M1TR clock spring made of?
It is manufactured from high-carbon spring steel (HCS) or EN47 grade steel, offering a tensile strength of 1500–1800 MPa for durability.
How do I know when to replace the quill return spring?
You should replace the spring if you notice the quill fails to return fully upward, if the spring has visible cracks, or if it has lost its tension during operation.
What is the load capacity of this clock spring?
The spring is rated for a load capacity between 15 and 45 N, ensuring balanced and consistent spring action.
Does the Pentagon M1TR clock spring come with a warranty?
Pentagon provides standard industrial warranty support. Please check the specific documentation provided with your purchase or contact our support team.
Can I install the M1TR clock spring myself?
Yes, it can be installed by a technician. Ensure the mounting holes align perfectly to avoid binding and lubricate contact points sparingly.
What is the weight of the Pentagon M1TR clock spring?
The spring has a net weight of 0.5 kg, making it easy to handle during installation.
Where can I buy the M1TR milling machine quill return spring in India?
You can purchase the Pentagon M1TR clock spring online through authorized industrial suppliers like Gearo, which offers pan-India delivery and GST invoices.
Who should choose the Pentagon M1TR Clock Spring (Model B178)?
This spring is ideal for workshop owners and maintenance engineers operating M1TR, M2TR, or M3TR vertical milling machines who require a durable, high-tensile replacement part for their spindle quill return mechanism.
How does the Pentagon M1TR spring compare to generic alternatives?
The Pentagon B178 model is engineered with specific EN47 high-carbon steel for superior fatigue resistance and consistent tension, unlike generic springs that may deform quickly under industrial stress.
Is this spring suitable for heavy-duty milling operations?
Yes, its high tensile strength (1500–1800 MPa) and robust construction are specifically designed to withstand the vibrations and cyclic loading of heavy-duty industrial milling.
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Full description
The Spindle Up & Down Clock Spring (also known as a quill return spring) is a key component in vertical and turret milling machines. It provides controlled tension for the spindle/quill return mechanism, ensuring smooth and stable vertical movement during machining operations.
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• Outer Diameter: 154 mm • Tensile Strength: 1500–1800 MPa • Load Capacity: 15–45 N • Material: High-Carbon Spring Steel (HCS) / EN47