Automatic Feed Gear Shaft Hub with Gear and Shifter Vertical Milling Machine – Model B-042057
Automatic Feed Gear Shaft Hub with Gear and Shifter (Model B-4257) is a complete transmission assembly designed for vertical turret milling machines. It enables smooth, accurate, and reliable automatic feed operation through its integrated hardened gears, spring-loaded shifter, and precision-machined shaft hub.
Specifications
For: Vertical Milling Machine – Model B-042057- Model
- B-042057
- Product Name
- Auto Feed Gear Shaft Hub Assembly
- Material
- Alloy Steel + Brass Bush + Hardened Gear Steel
- Gear Type
- Bevel Gears & Spur Gears Integrated
- Shifter Type
- Spring-Loaded Positive Engagement
- Shaft Hardness
- 50–58 HRC (approx.)
- Gear Hardness
- 55–60 HRC (approx.)
- Packing Size
- 250x50x50 mm
- Weight Approx
- 1.2 Kgs
Features:
- Complete gear shaft hub assembly with shifter mechanism
- High-strength alloy steel gears for durability
- Precision machining ensures accurate gear meshing
- Smooth and reliable auto-feed engagement
- Spring-loaded shifter for positive feed selection
- Brass bush for low-friction and long wear life
- Suitable for repair, replacement, and machine rebuilding
Description
This Automatic Feed Gear Shaft Hub Assembly (Model B-4257) is a complete feed-drive component used in vertical turret milling machines. It integrates the gear shaft, bevel gears, hub, spring-loaded shifter, and engagement mechanism to transmit motion smoothly from the drive system to the automatic longitudinal or cross feed.
Made with hardened alloy steel and brass bush components, it ensures long service life, stable torque transmission, and precise feed engagement.
Applications:
- Auto-feed transmission in vertical milling machines
- Feed control for longitudinal / cross feed systems
- Replacement for worn or damaged feed gear shafts
- Machine maintenance workshops
- Milling machine rebuilding and retrofitting
Compatibility:
- Bridgeport-type Vertical Milling Machines
- Ram-Turret Milling Machines (Chinese, Taiwanese, Indian models)
- Compatible with machines using B-4257 feed gearbox design
- Works with most standard M1TR / vertical turret milling machine feed units
More questions buyers ask
What is an Auto Feed Gear Shaft Hub Assembly?
It is a critical component in vertical turret milling machines that transmits motion from the drive system to the automatic longitudinal or cross feed.
What material is this gear shaft made of?
It is constructed from high-strength alloy steel with a hardened gear steel finish and a brass bush for reduced friction.
What is the hardness rating of the gears?
The gears are hardened to approximately 55–60 HRC for superior durability and wear resistance.
Is this compatible with Bridgeport milling machines?
Yes, it is designed for Bridgeport-type vertical milling machines and compatible ram-turret models using the B-4257 design.
Does this assembly include the shifter?
Yes, it comes as a complete assembly including the gear shaft, hub, and spring-loaded shifter mechanism.
What is the weight of the assembly?
The approximate weight of the unit is 1.2 kg.
Can this be used for machine retrofitting?
Yes, it is ideal for machine maintenance, repair, rebuilding, and retrofitting of vertical turret milling machines.
How does the shifter mechanism work?
It uses a spring-loaded positive engagement system to ensure reliable and smooth feed selection during operation.
What are the dimensions of the packing?
The packing size is approximately 250x50x50 mm.
Where can I buy this in India?
You can purchase this Pentagon spare part online through authorized industrial marketplaces with pan-India delivery.
Who should choose the Model B-042057?
This model is perfect for professional machine shops and maintenance technicians requiring a high-precision, durable replacement for standard vertical turret milling machine feed systems.
Is this better than generic aftermarket feed gears?
Yes, Pentagon's assembly features hardened alloy steel and precision-machined components, offering better longevity and smoother feed engagement compared to standard generic parts.
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Full description
Automatic Feed Gear Shaft Hub with Gear and Shifter (Model B-4257) is a complete transmission assembly designed for vertical turret milling machines. It enables smooth, accurate, and reliable automatic feed operation through its integrated hardened gears, spring-loaded shifter, and precision-machined shaft hub.