Jingchuan.Precision

Machining capabilities

Machine envelopes, achievable tolerances, inspection equipment and production volumes — the numbers you need before you release a drawing.

9
Manufacturing services
37
Material references
13
Finishing processes
5
Website languages

Equipment details on request

Send your drawing to confirm the equipment, inspection method and production capacity for your part.

Achievable tolerances

FeatureStandardPrecisionNotes
Linear dimensionsISO 2768-m (±0.1 mm)±0.01 mmBelow 100 mm; larger dimensions scale with length.
Turned diametersIT8 / ±0.05 mm±0.005 mm (IT5)Ground diameters reach ±0.002 mm.
Bore diametersH8H6 / H5 (reamed or honed)Specify fit class rather than a ± band where a shaft mates.
Flatness0.05 mm / 100 mm0.003 mm / 300 mm (ground)Lapping reaches 0.001 mm on small faces.
True position⌀0.1 mm⌀0.02 mm (single setup)Across multiple setups add the fixture repeatability.
Concentricity / runout0.05 mm TIR0.005 mm TIRSingle-chucking operations give the tighter figure.
Angular tolerance±0.5°±0.05° (3 arcmin)Sine-bar or rotary-table setups for the tighter band.
Surface roughnessRa 1.6 µmRa 0.1 µm (ground), Ra 0.025 µm (lapped)State Ra and the measurement direction on the drawing.
Thread tolerance6H / 6g4H5H / 4g6gAll threads gauged with go / no-go before shipment.
Minimum wall thickness1.5 mm metal / 2.0 mm plastic0.8 mm aluminium / 1.2 mm stainlessThin walls may require stress relief and custom fixturing.

Tighter tolerances than those listed are achievable on review — please mark critical dimensions on your drawing.

Inspection & metrology

Send your drawing to confirm the equipment, inspection method and production capacity for your part.

Production volumes

1 – 10
Prototype
3 – 7 days

Machined from stock material, no tooling cost.

10 – 100
Pilot series
7 – 12 days

Soft jaws and simple fixtures amortised across the batch.

100 – 1,000
Low-volume production
12 – 20 days

Dedicated fixturing, optimised cycle time, first-article approval.

1,000 – 20,000
Series production
20 – 35 days

Bar-fed and pallet-loaded automation, SPC on nominated dimensions.

20,000 +
High volume
On schedule

Call-off releases, safety stock and kanban held at our facility.

Accepted file formats

Preferred 3D

  • STEP (.step / .stp)
  • Parasolid (.x_t / .x_b)
  • IGES (.igs / .iges)

Native CAD

  • SolidWorks (.sldprt)
  • Creo (.prt)
  • CATIA (.catpart)
  • Inventor (.ipt)

2D drawings

  • PDF (dimensioned drawing)
  • AutoCAD (.dwg / .dxf)

Mesh

  • STL (.stl)
  • 3MF (.3mf)
  • OBJ (.obj)

Archives

  • ZIP
  • 7Z
  • RAR

Send us your drawing today

STEP, IGES, X_T, DWG, DXF, PDF or STL. Every file is treated as confidential and covered by NDA on request.

  • Reviewed by a manufacturing engineer
  • No obligation, no account required
  • NDA available before file exchange
  • Files encrypted in transit and at rest