Navi Mumbai, Maharashtra

Large Diameter Turning in Navi Mumbai

Precision Machining India supplies OEMs, MNC plants and engineering firms in Navi Mumbai and across Maharashtra with large Diameter Turning, made in our ISO 9001:2015 certified CNC machining plant in Pune, India.

Get a quote in 24h Navi Mumbai hub

Dial indicator checking shaft runout — illustrative machining image

ISO 9001:2015 Certified
Documented quality management system
Mitutoyo Quality Inspection
Calipers, micrometers, height gauge, DTIs
Export-Ready Packaging
VCI film, ISPM-15 wooden crates
RFQ Response in 24 Hours
Quote within one working day
NDA Available
Your drawings stay confidential

On this page10 sections

At a glance

Materials & technical specifications

Material choice drives cost, lead time and performance. We stock or source certified bar and plate in Stainless Steel, Brass, Aluminium and Nylon, with EN 10204 3.1 material certificates available on request.

Process: Large Diameter Turning
Materials: Stainless Steel, Brass, Aluminium, Nylon
Standard tolerance: ±0.02 mm on finished diameters
Surface finish: As-machined (Ra 1.6–3.2 µm), fine turned (Ra 0.8 µm), passivation and electropolishing through partners
Max turning size: Ø400 × 1200 mm (conventional), bar work on CNC lathes
Max milling envelope: 800 × 500 × 400 mm (VMC)
Threading: M3–M32 auto tapping; metric, BSP, NPT, UNC/UNF
Batch size: 1 prototype to 10,000+ pieces

Micrometer measuring a machined component — illustrative machining image

Large Diameter Turning in Navi Mumbai: overview

Turning up to Ø400 mm and 1200 mm long. Large shafts, rollers and discs are turned on the Uma Enterprises lathe, with CNC finishing where geometry allows.

Every order is programmed in VISI or Delcam CAM, machined on Uma Enterprises lathe, Ø400 × 1200 mm, and inspected in our Mitutoyo quality lab before it is packed and shipped.

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Large Diameter Turning capability

Our large diameter turning cell handles single prototypes through repeat batches of tens of thousands. Typical work includes shafts, flanges and bushings.

Before quoting, our engineers review your STEP, IGES or PDF drawing for machinability and suggest changes that reduce cost without affecting function.

CNC turning centres (LMW, Jyoti, Ace Micromatics): Shafts, bushings, fittings, turned plastic parts
Vertical machining centre (VMC) (Ace Micromatics, FANUC control): 3-axis milling, bed 800 × 500 × 400 mm
Auto tapping machines (M3 to M32 capacity): High-volume internal threading
Conventional lathe (Uma Enterprises): Turning up to Ø400 × 1200 mm
Band saw (Rajlaxmi): Bar stock cutting and blank preparation

Height gauge inspection on a surface plate — illustrative machining image — Illustrative machining and inspection imagery.

Tolerances & surface finish

Standard capability for this work is ±0.02 mm on finished diameters. Bores can be held to H7 and bearing seats to h6/g6 fits. Where your drawing calls for tighter limits, we agree the critical characteristics up front and record them on the inspection report.

As-machined finishes of Ra 1.6–3.2 µm suit most functional surfaces. For seals, bearing journals and sliding fits we run a fine finishing pass to reach Ra 0.8 µm.

Plating, anodising, passivation and heat treatment are arranged through qualified partners and re-inspected in-house before packing.

Quality inspection process

Our ISO 9001:2015 system covers incoming material, first-article inspection, in-process checks and final inspection. Records are kept for every batch so any part can be traced back to its material heat.

Every shipment includes a dimensional inspection report, with material test certificates (EN 10204 3.1) on request.

Mitutoyo digital vernier calipers
Mitutoyo height gauge
Granite surface plate
Mitutoyo outside micrometers
Inside calipers and bore gauges
Dial test indicators

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Industries we serve

This work is used across medical devices, automotive, hydraulics and pumps & valves. Medical Devices customers, for example, need clean, burr-free parts in biocompatible materials with lot traceability.

Our core customers are corporate OEMs in automotive, hydraulics, pumps & valves and general engineering, plus multinational companies that need PTFE, Nylon, Delrin and PEEK parts machined to drawing.

Delivery & support in Navi Mumbai

We support corporate buyers in Navi Mumbai's industrial areas, including TTC Industrial Area (Turbhe, Mahape, Rabale), Airoli and Taloja. About 120 km. Next-day delivery by road.

For MNC and OEM plants in Navi Mumbai we offer on-site technical visits to review drawings, discuss DFM improvements and agree inspection plans, plus scheduled blanket-order deliveries to keep your line stocked.

Need parts for export from Navi Mumbai? We also pack to export standard and can ship directly to your overseas sites.

Why source from India with us

India has become a leading China+1 destination for precision machined components. For international buyers, we combine competitive piece prices with an ISO 9001:2015 quality system, English-speaking engineers and drawings worked to ISO, DIN and ASME standards.

We reply to RFQs within 24 hours, sign NDAs before receiving drawings, and give you one point of contact from quote to delivery.

ISO 9001:2015 certified
Mitutoyo quality inspection
Export-ready packaging
RFQ response in 24 hours
NDA available

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How to order

Getting a quote for large Diameter Turning is simple:

Send your drawing (PDF) and 3D model (STEP or IGES) with material, quantity and destination.
Our engineers review it and send a quote with lead time within 24 hours.
Approve samples or a first-article report for new parts.
We machine, inspect, pack and ship with full export documents.

Frequently asked questions

Get a quote in 24h

What tolerances can you hold for large Diameter Turning?

Standard capability is ±0.02 mm on finished diameters. Bores to H7 and shaft fits to h6/g6 are routine; tighter limits are agreed per drawing.

Are you ISO certified?

Yes. We are ISO 9001:2015 certified. We do not hold AS9100 or ISO 13485, but we work under customer quality plans and supply full inspection reports and material certificates.

What files do you need for a quote?

A PDF drawing with tolerances plus a STEP or IGES model is ideal. Include material, quantity, finish and destination. We reply within 24 hours.

What is your minimum order quantity?

There is no fixed MOQ. We machine single prototypes, low-volume batches and high-volume production runs.

Do you deliver in Navi Mumbai?

Yes. Next-day delivery by road, covering TTC Industrial Area (Turbhe, Mahape, Rabale), Airoli and Taloja. On-site technical visits are available.

Keep exploring

Related capabilities, materials and markets

Everything below is machined in the same Pune plant to the same ISO 9001:2015 system. Follow whichever is closest to the part you are sourcing.

Send your drawing. Get a quote in 24 hours.

Upload STEP, IGES or PDF files. NDA available on request. Quoting: Large Diameter Turning in Navi Mumbai.

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