Custom Machining

Custom machined parts from drawings for construction and mining equipment.

SinoField Machinery helps buyers prepare RFQs for custom machined parts used in engineering machinery and mining equipment, including shafts, sleeves, bushings, bearing seats, housings, spacers, flanges, pins, and replacement components made from drawings or samples.

Send RFQ Product range

Send these details first

2D drawing, 3D file, sample photo, or dimension sheet
Material grade and any substitute material allowed
Critical dimensions, tolerance, surface roughness, and fit position
Heat treatment, hardness, coating, welding, or assembly requirement

RFQ this part

Buyer intent

This page is built for OEM-style replacement buyers, repair workshops, and distributors that need China-based custom machining support from drawings, samples, material notes, tolerances, and production quantities.

Product fit summary

Applications: Drawing-based replacement, OEM-style spare parts, Repair workshop custom production
Compatible equipment: Construction machinery, Mining equipment, Crushers, Screens, Conveyors, Hydraulic equipment
Material options: Carbon steel, Alloy steel, 42CrMo, 40Cr, Stainless steel, Bronze
MOQ / lead time: By drawing, process, and material · 20-50 days after drawing and process confirmation

Applications

Where this product family fits.

Drawing-based replacement parts for construction machinery

Shafts, sleeves, spacers, flanges, and bearing seats

Repair workshop parts where the original part number is unavailable

Small-batch trial production before repeat orders

Mining equipment spare parts requiring machining or fabrication

OEM-style parts based on samples, sketches, or 2D/3D drawings

RFQ checklist

2D drawing, 3D file, sample photo, or dimension sheet
Material grade and any substitute material allowed
Critical dimensions, tolerance, surface roughness, and fit position
Heat treatment, hardness, coating, welding, or assembly requirement
Quantity, sample approval process, and repeat demand estimate
Destination port, packing method, and inspection requirement

Material and fit notes

Custom machining quotes depend on drawing completeness, material, tolerance, heat treatment, surface finish, and batch quantity.

If a drawing is incomplete, photos, sample measurements, and application notes help identify missing tolerances before supplier review.

For mining and construction equipment parts, load condition and wear environment should be explained before material alternatives are discussed.

Inspection points

Critical dimension and tolerance measurement
Material certificate or grade confirmation when required
Heat treatment and hardness checkpoints
Thread, hole, groove, and fit surface inspection
Sample approval, packing, and drawing revision control

Buyer questions

Practical answers before sending an RFQ.

Can you quote custom parts without a formal drawing?

A formal drawing is preferred, but a sample, photos, dimensions, material notes, and application details can start the review.

Which custom machined parts are suitable for RFQ review?

Shafts, sleeves, bushings, bearing housings, spacers, flanges, pins, seats, and similar heavy equipment components are suitable when evidence is clear.

Can a sample be made before batch production?

Sample feasibility, cost, lead time, and approval steps are reviewed after drawing, material, tolerance, and quantity are confirmed.

Quote review

Send model, drawing, material, quantity, and destination details.

Final price, samples, lead time, payment terms, and compliance details are confirmed manually after supplier review.

Start Custom Machining RFQ