Spindle Cover Chuck Nut / Lock Nut Front Cover for Vertical Milling Machine Model B-0133
High-precision spindle cover lock nut (Model B133) designed for Bridgeport-type vertical milling machines. Used as the front spindle cover nut to secure and protect the spindle bearing housing.
Specifications
For: Model B-0133- Model
- B-0133
- Outer Diameter (Top)
- 75 mm
- Inner Diameter (I.D.)
- 47 mm
- Outer Diameter (Base)
- 85 mm
- Thread Pitch
- 1.25 mm
- Thread Type
- External metric thread
- Material
- Heat-treated alloy steel
- Suitable for Spindle
- R8/NT30/NT40
- Packing Size
- 100x100x50 mm
- Weight Approx
- 1.5 Kgs
Features:
- Precision-ground internal seating
- Strong external metric thread (Pitch 1.25)
- Rugged construction for industrial use
- Ensures accurate spindle alignment
- Protects front bearings and spindle assembly
- Compatible with most Bridgeport-style milling machines
Applications:
- Vertical turret milling machines
- Bridgeport-type milling machines
- Spindle bearing housing locking
- Milling head servicing & spindle rebuild
Description
The B133 Spindle Cover Nut / Front Lock Nut is a critical component used on vertical turret milling machines (Bridgeport type).
It is installed on the front side of the spindle head to:
- Lock the spindle bearing housing
- Maintain preload and alignment
- Seal the spindle front area
- Protect internal bearings from dust, chips, and coolant
Manufactured from high-strength alloy steel and machined to tight tolerances, this lock nut ensures long-term stability and smooth spindle rotation.
More questions buyers ask
What is the function of the Spindle Cover Lock Nut?
It secures the spindle bearing housing, maintains preload, and protects the front spindle area from contaminants like chips and coolant.
Is this compatible with Bridgeport milling machines?
Yes, this B-0133 lock nut is designed as a direct replacement for Bridgeport-style vertical turret milling machines.
What material is the Pentagon B-0133 made from?
It is manufactured from high-strength, heat-treated alloy steel for maximum durability and wear resistance.
What are the key dimensions of this lock nut?
It features an 85mm base outer diameter, 75mm top outer diameter, and a 1.25mm thread pitch.
Does it fit R8 spindles?
Yes, it is suitable for R8, NT30, and NT40 spindle configurations commonly found in vertical mills.
How do I install the spindle lock nut?
Installation should be performed by a qualified technician during spindle head servicing or bearing replacement to ensure proper alignment.
Is a GST invoice provided?
Yes, all purchases include a formal GST invoice for tax compliance.
Do you offer pan-India delivery?
Yes, we provide reliable, pan-India shipping for all industrial machine spare parts.
What is the weight of the B-0133 lock nut?
The unit weighs approximately 1.5 kg.
Can this be used for spindle rebuilds?
Absolutely, it is a standard component used during the servicing and rebuilding of milling machine heads.
Who should choose the Pentagon B-0133 Spindle Lock Nut?
This is the ideal choice for workshop owners and maintenance engineers performing repairs or upgrades on Bridgeport-style vertical milling machines.
Is there only one version of this lock nut?
Yes, the B-0133 is a standardized part designed for specific Bridgeport-style spindle housings.
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Full description
High-precision spindle cover lock nut (Model B133) designed for Bridgeport-type vertical milling machines. Used as the front spindle cover nut to secure and protect the spindle bearing housing.