CNC Machining Services in Vasai – Complete Guide to Precision Parts
Vasai East is a busy manufacturing area near Mumbai with over 1,000 industrial units. Factories here make precision parts like shafts, bushes, and machine housings. From automotive to electrical industries, companies rely on local shops for high-quality metal components, with CNC machining in Vasai playing a crucial role in ensuring the accuracy and efficiency of these parts.
If you’re buying parts for your factory, choosing the right CNC machining Vasai vendor matters. Wrong choice means delays, bad quality, or wasted costs. The best shops deliver parts on time that fit perfectly and last long.
This guide explains everything you need to know. You’ll learn about services, tolerances, materials, costs, and what separates good shops from average ones. Whether you need prototypes or bulk orders, Vasai has solid options—and we’ll show you what to look for.
What is CNC Machining?
CNC machining is a computer-controlled process that removes material from metal blocks or bars to create precise parts from your 2D or 3D drawings. You send a drawing, and the machine makes exact copies every time.
Benefits for industrial buyers:
- Very accurate sizes (±0.01mm possible)
- Same quality in every piece
- Fast for medium to large orders
- Good surface finish (Ra 0.8-1.6μm from turning)
Example: A shaft for a pump. Manual machining might vary by 0.1mm each time. CNC holds 0.01mm across 1,000 pieces. That’s the difference between a reliable assembly and one that leaks or vibrates
Main CNC Services Available in Vasai
Vasai shops offer full services under one roof—from cutting raw material to final grinding. Here’s what’s available:
CNC Turning (For Round Parts)
Turning makes shafts, pins, bushes, rollers. Modern CNC lathes handle:
- Up to 300mm diameter
- Up to 500-800mm length
| Part Type | Common Use | Tolerance | Surface Finish |
|---|---|---|---|
| Shafts | Pumps, motors | ±0.01-0.03mm | Ra 0.8μm |
| Bushes | Bearings | ±0.02mm | Ra 1.6μm |
| Pins | Machines | ±0.01mm | Good |
Pro Tip: Ask for live tooling to drill radial holes without removing the part. Saves time and improves accuracy.
CNC Milling (For Flat and Square Parts)
3-axis mills make blocks, plates, fixtures, and complex housings. Typical capacity: 1050x600x600mm travel.
Good for:
- Housings and enclosures
- Keyways and slots
- Drill holes and threads
Tolerances: ±0.02-0.05mm. Best for jigs, fixtures, and tool parts.
Cylindrical Grinding (Final Finishing for Tight Fits)
After turning or heat treatment, grinding achieves super-tight tolerances. Grinder capacity typically:
- 200mm diameter maximum
- 600mm length
- ±0.005mm tolerance
- Ra 0.2μm finish
Perfect for: Bearing seats, shaft journals, and hydraulic sealing surfaces.
Other Specialized Services
- EDM (Spark Erosion): Cuts very hard steel (D2, tool steel) or intricate shapes without tool stress
- Band Saw Cutting: Cuts raw bars clean (up to 500mm), reducing machining time
- Hot Forging: Makes high-strength fasteners (M32 maximum), ideal for fatigue-critical applications
Materials Machined in Vasai Shops
Good vendors handle a wide range of metals for different applications:
Steels:
- Mild steel (EN8): Cost-effective shafts and general parts
- Stainless (SS304/316): Pumps, food machinery, marine applications
- Tool steel (D2): Dies and molds
Light Metals:
- Aluminum 6061: Lightweight boxes and brackets
- Brass: Electrical fittings and connectors
High-Performance Materials:
- Inconel, Titanium: Aerospace and defense (slow to machine, requires expertise)
| Material | Cost (₹/kg) | Machinability | Best Applications |
|---|---|---|---|
| EN8 Steel | 60-80 | Excellent | Shafts, pins |
| SS316 | 280-350 | Fair | Wet/corrosive areas |
| Aluminum 6061 | 270-300 | Good | Housings, brackets |
| Inconel 718 | 2500+ | Difficult | Aerospace parts |
Industries Using Vasai CNC Services
Vasai supplies precision parts to many sectors:
- Automotive: Rollers, pins, custom shafts
- Electrical: Panels, mounting brackets, connectors
- Pumps/Valves: Shafts, bushes, housing components
- Fabrication: Jigs, fixtures, custom tooling
- Heavy Machinery: Spindles, bearings, structural parts
Vasai serves Mumbai factories and Palghar workshops. Fast delivery and lower costs than city shops are major advantages.
Buyer's Checklist: How to Evaluate a CNC Shop
Before ordering, check these key areas:
Machine Capability:
- What’s the CNC lathe swing and length?
- What’s the mill’s XYZ travel?
- What’s the grinder’s max diameter and length?
Quality Infrastructure:
- Do they have a CMM (Coordinate Measuring Machine)?
- Do they use micrometers, bore gauges, and roughness testers?
- Do they provide material test certificates?
Operational Reliability:
- Can they reliably meet your tolerance requirements?
- Do they support prototypes or only bulk runs?
- What’s their track record for on-time delivery?
| Good Sign | Red Flag |
|---|---|
| CMM machine for inspection | Only calipers and rulers |
| Material test certificates | No traceability documents |
| Sample parts from past jobs | Verbal promises only |
| Written process documentation | No standard procedures |
Why Vasai Outperforms Mumbai for CNC Machining
Cost Advantage:
- Often 20-30% cheaper than typical Andheri/Dadar shop rates
- Lower rent, utilities, and overhead
Operational Speed:
- 3-5 days typical turnaround vs 7-10 days in Mumbai
- Less congestion, easier logistics
Ecosystem Maturity:
- Material stockists nearby
- Heat treatment vendors within 2km
- Surface coating shops next door
Skilled Workforce:
- Experienced machinists from Gujarat and UP
- Deep expertise in tolerance stacking and material behavior
Proximity:
- 2 hours to JNPT port for exports
- Easy access to Gujarat steel suppliers
Real Pricing in Vasai
Costs vary by size, material, quantity, and complexity:
- Simple EN8 steel pin (50mm): ₹35-90 each (100+ pieces) — steel prices up 8% since May 2025
- SS316 shaft: ₹120-350 each — stainless prices stable
- Ground journal (precision): ₹200-500 each
- Milled aluminum housing: ₹300-1500 each — material cost now ₹280+/kg
Bulk Discounts: Orders of 100+ pieces typically save 30-50% per unit. Send your drawing for a competitive quote.
What Makes a Reliable CNC Partner
Beyond just machines, look for these qualities:
- End-to-End Process Control: A shop that handles cutting, turning, milling, and grinding under one roof has better quality consistency. One team owns the entire process.
- Material Traceability: Insist on test certificates with heat numbers. Not generic certs—specific to your job. This matters for audit trails and compliance.
- Honest Tolerance Discussion: A good vendor won’t promise ±0.001mm on everything. Instead: “For this geometry, we’ll hold ±0.01mm from turning. For your bearing fit, we’ll grind to ±0.005mm.” That honesty is rare and valuable.
- Flexibility: Can they handle prototypes (one-off) and production (1000+ pieces) equally well? Versatility matters as your needs grow.
- Local Responsiveness: Quick engineering change orders (ECOs), sample parts for approval, material substitutions—these shouldn’t require 5-day turnarounds. A local shop with good logistics can support you same-day.
How to Request a Quote (RFQ)
When you’re ready to source parts, send:
Essential:
- 2D drawing (PDF/DWG) or 3D model (STEP/IGES)
- Material grade and required quantity
- Critical tolerances (diameter, perpendicularity, bearing fit code)
- Delivery location
Helpful:
- Heat treatment requirements (affects final grind strategy)
- Surface coating or plating needed
- Secondary operations (drilling, tapping, marking)
- Delivery urgency
A good shop responds in 24-48 hours with price, lead time, and process notes. They’ll flag manufacturability issues upfront, saving you surprises and rework.
What to Expect From a Professional CNC Shop
Quality Commitment:
- SPC (Statistical Process Control) charts for critical dimensions
- 100% dimensional check on critical features
- Material certifications provided with every batch
Engineering Support:
- DFM (Design for Manufacturability) review of your drawing
- Cost optimization suggestions without compromising quality
- Material recommendations based on application requirements
Production Flexibility:
- Prototype support with fast turnaround
- Scaling capability from 5 pieces to 50,000 pieces
- Rush orders accommodated when possible
Communication:
- Regular updates on job progress
- Photo evidence of finished parts before shipment
- Responsive to technical questions and changes
Our Capabilities at A & S Engineers
As a Vasai East shop operating from Naikpada’s Diamond Industrial Estate since the 1990s, we follow exactly the kind of practices described above. Here’s our actual setup:
Equipment and Capacity:
- 2x Ace Micromatic CNC lathes (300mm dia, 500-800mm length)
- Pinnacle VMC mill (1050x600x600mm travel)
- Sharda cylindrical grinder (Ra 0.2μm achievable)
- Vinpak EDM for hardened steel and exotic alloys
- Eversing bandsaw for raw material prep (500mm capacity)
Service Range:
- Full process control: material prep → machining → finishing → inspection
- Materials: Stainless steel, aluminum, Inconel, tool steel
- Industries served: Automotive, pumps/valves, electrical, aerospace, fabrication
- Quotes available from STEP/IGES/DWG files within 24 hours
Team Expertise:
- FANUC and Mitsubishi CNC programming
- Drawing review for manufacturability and cost optimization
- Capable of both prototype and production runs
Final Takeaway on CNC Machining in Vasai
Vasai has become the go-to hub for CNC machining in the Mumbai region. The combination of skilled vendors, cost efficiency, and fast turnaround makes it ideal for both prototypes and production. With updated material costs (aluminum now ₹280+/kg, steel up 8% since May), get quotes immediately to lock in pricing.
When evaluating vendors, focus on their actual capabilities—CMM inspection, material traceability, tolerance proof—rather than just competitive pricing. The right partner saves money in the long run through zero rework, on-time delivery, and reliable quality.
Send your drawing today. See firsthand how a professional CNC shop handles your specifications.
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