on purpose — prevents trailing whitespace from corrupting auto-prepend output. CNC Machining Services in Pakistan | Precision Milling, Turning & Prototyping | Unitec Trade Line

CNC Machining Services in Pakistan

CNC machining services in Pakistan from our Rawalpindi shop floor - 3-axis and 5-axis milling, CNC turning, prototyping and small-to-medium batch production with tolerances down to ±0.005 mm. Vertically integrated with our fabrication and design & development desks, so a job can move from sketch to drawing to machined part to welded sub-assembly under one roof.

What CNC Machining Is - And What Unitec Produces

CNC (Computer Numerical Control) machining is subtractive manufacturing - programmed machines remove material from a solid stock workpiece to produce a finished part to drawing tolerance. Unlike fabrication (where steel is cut and welded into structures) or 3D printing (additive), CNC machining is the dominant process for precision mechanical components: gears, shafts, bushings, valve bodies, hydraulic blocks, instrument housings and complex prototypes.

What We Produce

  • Replacement parts for industrial plant - pumps, gearboxes, cement mills, textile machinery
  • Hydraulic and pneumatic components - manifolds, valve bodies, cylinder heads, custom fittings
  • Automotive and trailer parts - drive components, brackets, brake-line fittings
  • Defense-supply mechanical parts under contract authorisations
  • Prototype and small-batch parts for product developers and design houses
  • Tooling fixtures and jigs for our own and client production

We sit deliberately in the medium-precision, medium-volume gap - too sophisticated for the curb-shop machinist with one manual lathe, too small for the EPC giants. Tolerances of ±0.01 mm and surface finishes to Ra 0.4 μm on the right materials, with batches from a single prototype to 5,000-unit production runs.

Machining Services

CNC Turning

For cylindrical parts: shafts, bushings, pins, threaded fasteners, custom adapters. Lathe work to OD ~Ø 250 mm, length up to 1,000 mm on standard machines and up to 2,000 mm on the heavy-duty lathe. Live-tooling lathes handle cross-drilling and milling features in a single setup, reducing fixturing error.

CNC Milling

For prismatic parts: blocks, plates, fixtures, manifolds, mould bases. 3-axis vertical machining centres are the workhorse; 4th-axis indexing handles multi-face work without re-fixturing.

Drilling, Boring & Tapping

Including deep-hole drilling for hydraulic blocks, line-boring for housing bores, helical milling on large-diameter holes. Tapping in-machine to ISO metric, UNC / UNF and BSP / BSPP threads.

Multi-Axis Machining

5-axis simultaneous machining for complex geometries - impellers, turbine elements, sculpted features, intricate prototypes that 3-axis cannot reach in a single setup. Fewer setups means tighter geometric tolerances and shorter lead time.

Prototyping & Small-Batch

Single-piece prototypes from CAD to part within 5–10 working days. Used for design verification before tooling commits, for special-application replacement parts, and for academic and R&D work. Works hand-in-glove with our CAD & design team for clients without finished drawings.

Auxiliary Processes

Heat treatment (induction hardening, case carburising), surface finishing (grinding, hard-chrome, anodising, blackening, passivation), and EDM - routed through our network when a job needs them, with all steps documented in the inspection dossier.

Equipment List, Capacity & Tolerances

Workpiece envelope across the shop: roughly 800 × 500 × 500 mm on milling and Ø 500 × 2,000 mm on turning. For larger parts we subcontract through partner shops in Wah and Taxila under the same QC dossier.

Machine Qty Capacity Tolerance / Note
3-Axis VMC4800 × 500 × 500 mm, 4th axis available±0.01 mm
5-Axis Machining Centre1600 × 500 × 400 mm, simultaneous 5-axis±0.005 mm on critical features
CNC Turning Centre (live tooling)3Ø 250 mm × 1,000 mm BC±0.01 mm
Heavy-Duty CNC Lathe1Ø 500 mm × 2,000 mm BCFor long shaft work
CNC Surface Grinder1600 × 300 mmRa 0.2 μm achievable
Manual Mills, Lathes, DrillsseveralBackup & small jobsPer setup
Bandsaw / Cold Saw2Stock prep up to Ø 250 mmSquare-cut to length

Achievable Tolerances & Surface Finish

  • Standard machining: ±0.05 mm (most parts)
  • Tight-tolerance: ±0.01 mm
  • Critical 5-axis or ground features: ±0.005 mm
  • Surface finish: Ra 1.6 μm standard, Ra 0.4 μm with finishing pass, Ra 0.2 μm with grinding

CAM Software & File Formats

Mastercam, FeatureCAM and Fusion 360 on the CAM side. We accept STEP, IGES, Parasolid (X_T / X_B), SolidWorks, Fusion 360, Pro/ENGINEER native files, and 2D drawings as PDF, DXF or DWG.

Materials We Machine

Routine production-grade and engineering materials we hold or source quickly. All metal stock arrives with mill test certificates (MTCs) where the spec demands traceability - standard practice for oil & gas, defense and pharmaceutical-adjacent work.

Material Common Grades Typical Use
Carbon SteelEN8, EN9, AISI 1018, 1045, 4140General mechanical, shafts, gears
Tool SteelD2, O1, H13Tooling, dies, punches; case-hardenable
Stainless Steel304, 304L, 316, 316L, 410, 17-4 PHCorrosion-resistant, food / pharma / marine
Aluminum6061-T6, 7075-T6, 5052Lightweight structural, electrical, prototype housings
BrassC36000, C26000Plumbing, electrical, decorative
CopperC11000 ETPBus bars, electrical, heat-transfer
Engineering PlasticsDelrin / POM, PEEK, UHMW, PTFE, Nylon, AcrylicBearings, insulators, prototype housings

Imported specialty alloys (Inconel, Hastelloy, duplex SS, titanium grades) sourced on demand, with full mill test certificates and customs documentation.

Industries We Serve

  • Automotive Parts - drive-line bushings, brackets, brake-line fittings, transmission components, retrofit parts for the local auto cluster around Rawalpindi-Wah-Taxila.
  • Industrial Components & Replacement Parts - pump impellers, gearbox shafts, valve bodies, mill liners, conveyor sprockets - frequently on emergency turnaround when the imported original is on a 12-week lead time and the plant is down.
  • Hydraulics & Pneumatics - custom manifolds, cylinder rods, valve bodies, fittings.
  • Custom Prototypes - for product developers, university R&D groups and design houses needing hand-machined verification parts before tooling commits.
  • Defense Supply - mechanical components under appropriate authorisations.
  • Energy & Power - turbine components, sub-assemblies, calibration jigs.
  • Food & Pharma - stainless steel transit components, tank fittings, sanitary clamps to PSQCA / DRAP-aligned specs.

Quality Control & Inspection

Quality System

ISO 9001:2015-aligned quality management with documented procedures, internal audit programme, corrective-action tracking and a calibration register. Material traceability runs from MTC through receiving, work-in-progress and dispatch.

In-Process Inspection - 3 Hold Points

  1. Incoming material - MTC verification, dimensional spot-check.
  2. First-piece inspection - full dimensional check before continuing the run.
  3. Final inspection - sampling per AQL, or 100% inspection on critical features.

Inspection Equipment

  • Coordinate Measuring Machine (CMM) - partner facility with NIST-traceable calibration for parts where geometric tolerancing demands it.
  • Height gauges, bore gauges, micrometers - digital and Vernier, calibrated annually per ISO 17025-traceable lab.
  • Surface roughness tester - portable for Ra / Rz verification.
  • Hardness testers - Rockwell B/C and Brinell for heat-treated components.
  • Profile projector - bench-mounted for thread and form verification.
  • Thread plug & ring gauges - ISO metric, UNC/UNF, BSP/BSPP.

NDT Capability

Dye penetrant (PT) and magnetic particle (MT) in-house for surface defect detection; ultrasonic and radiographic testing through NDT-certified partners on demand. NDT reports issued per ASME V where the contract specifies.

Documentation Package

Every batch ships with: dimensional inspection report, material certificates, hardness or heat-treatment certificate (where applicable), NDT report (where applicable), and a fabrication completion certificate signed by the QA lead.

Project Examples

1. Pump Impeller Replacement - Cement Plant, KPK

A cement plant's imported pump impeller had a 14-week supplier lead time. We reverse-engineered from the worn original, machined a replacement in CK45 with hardness-controlled bearing seats, dynamically balanced, and delivered in 11 working days. Plant restart 3 weeks ahead of OEM lead time.

2. Hydraulic Valve Block - Automotive OEM, Lahore

Stainless 316L manifold block with 16 cross-bores and tapped ports, ±0.02 mm bore tolerance, surface finish Ra 0.8. Batch of 240 units run on 5-axis with 100% leak testing at 350 bar.

3. Custom Coupling Sleeves - Textile Mill, Faisalabad

EN8 carbon steel coupling sleeves with induction-hardened bores; batch of 1,200 across a 6-week schedule. Replaced an imported part at 38% of the original landed cost.

4. R&D Prototype Housing - Islamabad Tech Startup

Aluminum 6061 housing for a prototype IoT sensor, 5-axis milled with all mounting features in a single setup. Three iterations across a 4-week design loop, final unit shipped in time for the client's industrial-design pitch.

5. Defense Spare Mechanical Assembly - Authorised Contract

Tool-steel D2 components for a defense workshop, hardness 58–62 HRC after sub-zero quench, dimensional inspection per supplied drawing pack, full traceability dossier handed over with delivery.

Client names withheld under NDA. Detailed references available on request during quoting.

Pricing Model

CNC machining cost comes from four inputs: machine time (the dominant factor), material, finishing / auxiliary processes, and setup. We quote transparently against each so finance teams can see the breakdown.

Per-Part Pricing (Production Runs)

For moderate-to-high volume (typically > 50 units), we quote a per-piece price. Setup amortises across the batch, so the per-part rate drops 30–60% from prototype rate. Real example: a coupling sleeve quoted at PKR 14,000 as a prototype dropped to PKR 5,200 at batch-of-1,000.

Prototyping Pricing (1–10 Pieces)

Prototype Part Type Indicative Price (per piece)
Simple turned part (Ø ≤ 80, length ≤ 200 mm, mild steel)PKR 4,000 – 12,000
Complex turned / threaded multi-featurePKR 8,000 – 25,000
3-axis milled small blockPKR 6,000 – 20,000
5-axis prototype (complex aluminum housing)PKR 25,000 – 80,000

Stainless steel adds ~25%, tool-steel adds ~30–50% over mild steel.

Setup Fee

First-article setup runs PKR 8,000 – 35,000 depending on part complexity, and is waived for repeat orders within 12 months.

What's Included vs Quoted Separately

  • Included: drawings review, work-holding fixtures (within reason), full inspection report, material per drawing.
  • Quoted line-by-line: purpose-built tooling fixtures, heat treatment, third-party NDT, plating / anodising, packaging beyond standard.

For fast-turnaround prototyping (< 5 working days), an expedite premium of 25–40% applies, capacity permitting.

Frequently Asked Questions

What is the lead time on a prototype?

Single-piece prototypes typically run 5–10 working days from CAD release to delivery, depending on geometry, material availability and any heat-treatment or finishing steps. Express prototyping in under 5 working days is available with a 25–40% expedite premium subject to capacity.

What is the minimum batch size?

There is no fixed minimum batch - we run jobs from a single prototype through to 5,000-unit production runs. Setup amortisation kicks in once batch size exceeds about 50 units, where the per-piece price drops 30–60% from prototype rate. For batches of 1–3 pieces, a setup fee of PKR 8,000–35,000 applies depending on complexity.

What tolerances can you reliably hold?

Standard machining tolerance is ±0.05 mm. Tight-tolerance work holds ±0.01 mm. Critical 5-axis or ground features hold ±0.005 mm. Surface finish ranges from Ra 1.6 μm standard, Ra 0.4 μm with a finishing pass, down to Ra 0.2 μm on the surface grinder. Tolerance and finish are confirmed in writing per drawing before quoting.

What CAD file formats do you accept?

Native: SolidWorks, Fusion 360, Pro/ENGINEER, Mastercam. Neutral 3D: STEP, IGES, Parasolid (X_T, X_B). 2D drawings: PDF, DXF, DWG. Reverse engineering from a physical sample is also supported by our design & development desk when no CAD exists.

Can you reverse-engineer a part from a worn sample?

Yes. The sample is dimensionally measured (digital callipers, profile projector, hardness check, surface-finish reading), drawings are produced in our CAD desk, and a first-article is machined for fitment validation before any production run. This is one of the highest-demand services for plant-floor breakdown work.

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