Services
From compressor and pump shafts to bushings and rotational housing components up to Ø800 × 2,000 mm — turned, threaded, and live-tool-milled in a single workholding setup wherever the geometry allows. Concentricity held to ≤ 0.01 mm TIR and surface finish down to Ra 0.4 µm.
Built To
Aligned9001:2015Aligned14001:2015Aligned45001:2018Capability Snapshot
Diameter tolerance
±0.005 mm
Concentricity (TIR)
≤ 0.01 mm
Surface finish (Ra)
0.4 µm
Max turning diameter
Ø800 mm
Max turning length
2,000 mm
Lead time (typical)
5 – 25 days
How we hold these numbers
Materials we worked
Equipment & Capacity
Rather than operating a large mix of unrelated equipment, we focus on the machines required for precision shafts, sleeves, housings, rotors, and other critical OEM components. This allows our team to maintain stable processes, consistent setups, and repeatable quality across production runs.
Drawing-Driven Precision Turning
Our turning experience comes from manufacturing shafts, bushings, sleeves, and other components used in rotating equipment. In these applications, concentricity, sealing surfaces, thread quality, and bearing fits all matter because they affect how the equipment performs in service. The same machining practices developed for those components are applied to the OEM turning work we manufacture under NDA.
Whenever possible, multi-step shafts are machined in a single chucking setup to maintain concentricity between bearing journals and other critical diameters. For long, slender shafts, steady rests are used during finishing operations to minimize deflection and improve dimensional stability.
We machine metric, UN, ACME, trapezoidal, and other specified thread forms according to drawing requirements. Standard threads are verified with calibrated gauges, while custom profiles are inspected against customer-supplied or drawing-defined specifications.
Cross-holes, keyways, flats, and similar secondary features can be completed on the lathe using live tooling. When additional machining is required, established datum surfaces are used to maintain alignment between turned and milled features.
Quality & Inspection
Every job is built around traceability. CMM data, material certificates, and inspection reports stay with the part file from RFQ to delivery.
TIR reported per drawing callout, every critical diameter.
Runout is measured between centers or in the specified inspection setup. Concentricity between journals and other critical diameters is verified against the tolerances defined on the drawing.
Ring & plug gauges for standard forms; profile checks for custom threads.
Metric, UN, ACME, trapezoidal, and other specified thread forms are inspected using calibrated gauges. Custom thread profiles are verified against customer specifications or approved reference gauges.
MTC retained by heat lot.
Mill test certificates are maintained for each heat lot of raw material. Where heat treatment is required, hardness is verified before final machining or grinding operations.
Verified at setup, monitored throughout production.
A first-article inspection is completed before production begins. Critical dimensions are then checked at defined intervals during manufacturing to ensure continued compliance with drawing requirements.
Our Process
Material specifications, tolerances, thread requirements, and critical dimensions are reviewed before quotation.
Bar stock, forgings, or customer-supplied material are verified and prepared for machining.
Roughing and finishing operations are completed according to the drawing, with particular attention to concentricity, surface finish, and critical fits.
Threads, grooves, cross-holes, keyways, and other required features are machined and verified.
Dimensions, runout, thread forms, and other specified characteristics are inspected before packaging and shipment.
Related Reading
Long-form pieces our team has written from real shop-floor work, with the trade-offs and decisions behind them.
Finishing Add-On
Anodize, passivation, plating, powder coating, bead blast, polish, and water-based spray paint coordinated through SCPM as a packaged add-on to your cnc turning order — one drawing, one PO, no separate finishing supplier to manage.
Common Questions
Up to Ø800 × 2,000 mm on our heavy-duty CNC turning center. Mid-size parts run on two Ø450 × 1,500 mm turning centers (±0.01 mm), and short tight-tolerance parts on a dedicated high-precision lathe (Ø350 × 370 mm, ±0.005 mm). The job is sized to the right platform rather than over-machined on the wrong one.
Yes. We cut both standard and custom thread forms including metric, UN, ACME, and trapezoidal profiles. Standard threads are verified with go/no-go gauges; custom forms with profile gauges either sourced from the drawing or supplied with the RFQ.
By minimizing re-chucking — multi-step diameters are roughed and finished within the same workholding setup wherever the geometry allows. Long shafts (L/D > 8) are supported with steady rests during finishing. Concentricity is verified with runout gauging per the drawing's tolerance callout.
Yes. Our turning centers include live tooling for cross-drilling, slotting, keyway, and flat milling without removing the part. Features that exceed live-tool capacity are routed deliberately to a machining center with the turned datum protected.
No MOQ — we accept 1-piece prototypes through repeat OEM production. For 1-piece work we may apply a one-time setup fee depending on tooling complexity; this is quoted up front, not surprised on invoice.
5 – 25 working days depending on quantity, material lead time, and secondary operations. Prototypes (1–10 pieces) typically run 5–10 working days; small batches (10–100) run 10–15 days; production batches over 100 pieces depend on the specific job and are quoted with a firm date.
We focus on carbon steel (A36, 1045), stainless steel (304, 316), and ductile iron (Class 35, Grade 65-45-12) — the grades we run daily on industrial OEM work. If your drawing calls for something close to these, send it over and we'll confirm whether we can source and machine it before we quote.
Send us your drawings and we'll review them — no commitment required.
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