Z Axis Dial Ring Lock Nut for Milling Machine M2/M3/M4 and M5 Model C-8688
Precision dial ring lock nut engineered for the Z-axis feed mechanism of milling machines to ensure accurate vertical positioning. Constructed from high-strength alloy steel for durability and resistance to wear during heavy-duty operations. • Inner Bore: 18.6 mm • Outer Diameter: 33 mm • Upper OD: 25.6 mm • Nut OD: 44.5 mm • Model No.: C-8688
Specifications
For: Model C-8688- Product Name
- Dial Ring Lock Nut Z axis
- Model No.
- C-8688
- Outer Diameter
- 33 mm
- Inner Bore
- 18.6 mm
- Upper OD
- 25.6 mm
- Material
- High-strength alloy steel
- Outer diameter Nut
- 44.5 mm
- Product dimension
- 100x100x100
- Weight
- 0.5 Kgs
Maintenance & Handling Tips
- Inspect threads regularly for wear or damage
- Apply appropriate lubricant to prevent seizing
- Tighten to specified torque values only
- Clean debris before installation or removal
- Store in dry environment to prevent rust
- Replace if inner bore shows elongation signs
- Use correct tools to avoid stripping threads
Operational Reliability
- Ensures precise Z-axis positioning accuracy
- Prevents tool drift during deep cutting operations
- Provides rigid lock for consistent surface finish
- Compatible with standard milling machine setups
- Simplifies tool height adjustment procedures
- Reduces downtime caused by loose components
- Enhances overall machine operational safety
Material & Construction Quality
- Manufactured from high-strength alloy steel
- Engineered to withstand heavy milling loads
- Resistant to deformation under vibration
- Maintains dimensional stability over time
- Surface treated for corrosion resistance
- Precision machined for consistent performance
- Durable construction reduces replacement frequency
Key Features
- Z Axis Dial Ring Lock Nut for Milling Machine M2/M3/M4 and M5
- Model No. C-8688 design for secure locking
- Outer Diameter: 33 mm for standard fitment
- Inner Bore: 18.6 mm compatible with shafts
- Upper OD: 25.6 mm ensures proper alignment
- Outer diameter Nut: 44.5 mm for grip
- Product dimension: 100x100x100 mm packaging
- Weight: 0.5 Kgs per unit for handling
More questions buyers ask
What is the function of the Z-axis dial ring lock nut?
It secures the Z-axis dial ring on a milling machine, ensuring precise positioning and preventing tool drift during operations.
Is this lock nut compatible with M2, M3, M4, and M5 milling machines?
Yes, the Pentagon C-8688 lock nut is designed for compatibility with standard M2, M3, M4, and M5 milling machine setups.
What are the key dimensions of this lock nut?
It features an 18.6 mm inner bore, 33 mm outer diameter, 25.6 mm upper OD, and a 44.5 mm outer diameter nut.
What material is the Pentagon C-8688 lock nut made of?
It is manufactured from high-strength alloy steel to withstand heavy milling loads and resist deformation.
Does this part come with a warranty?
Pentagon provides standard industrial warranty and support for their machine tool spares in India.
How do I install the Z-axis dial ring lock nut?
Ensure the shaft is clean, align the nut, and tighten to the specified torque. Avoid over-tightening to prevent thread damage.
Can this be used on Bridgeport-style mills?
Yes, this is a common replacement part for many turret milling machines, including Bridgeport-style mills.
What is the weight of the unit?
The unit weighs approximately 0.5 kg.
How often should I inspect the lock nut?
Regular inspection for thread wear or damage is recommended to maintain operational accuracy.
Where can I buy Pentagon milling machine spares in India?
You can purchase genuine Pentagon machine spares online through authorized industrial marketplaces with pan-India delivery.
Who should choose the Pentagon C-8688 Z-axis lock nut?
This part is ideal for workshop technicians and maintenance engineers looking for a durable, precision-machined replacement for their milling machine's Z-axis assembly.
Is the C-8688 better than generic lock nuts?
The Pentagon C-8688 is precision-engineered for dimensional stability and corrosion resistance, offering superior reliability compared to generic alternatives.
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Full description
Precision dial ring lock nut engineered for the Z-axis feed mechanism of milling machines to ensure accurate vertical positioning. Constructed from high-strength alloy steel for durability and resistance to wear during heavy-duty operations. • Inner Bore: 18.6 mm • Outer Diameter: 33 mm • Upper OD: 25.6 mm • Nut OD: 44.5 mm • Model No.: C-8688















