Overview
XCM CNC is a China alloy steel CNC machining factory serving export projects with imported equipment from brands such as DMG and Mazak, ISO 9001 and IATF 16949 based quality systems, MOQ from 1 piece, and a standard lead time of 10-15 days.
The factory can coordinate rough machining, heat treatment, and finish machining around grades such as 42CrMo, 40Cr, and 20CrMnTi, while supporting material certificates, heat treatment reports, and dimensional reports to the order requirement. The model fits repeat supply of shafts, flanges, couplings, and hydraulic parts, with early confirmation of large-part fixturing, protective packaging, and delivery conditions.
Key Capabilities
Machining Parameters and Tolerances
- Materials: 40Cr, 42CrMo, 20CrMnTi, GCr15
- Tolerance: +/-0.003 mm (+/-0.00012 inch), IT5 or IT6 accuracy, +/-0.01 mm shaft and bore fits, with h6 and H7 available
- Surface Finish: Ra 3.2 um milled, Ra 1.6 um precision machined, Ra 0.8 um turned or bored
- GD&T: Coaxiality 0.012 mm, runout 0.01 mm, cylindricity 0.011 mm
- Max Size: Milling 3000 x 1600 x 1400 mm, turning diameter 1200 x 2500 mm
- Heat Treatment: Quench and temper, carburizing, nitriding
- Thread: M1.4-M220, NPT, BSP, G, PT
- Batch Range: 1 piece to repeat production, with standard lead time 10-15 days
Large Alloy Steel Turning Capability
Turning capacity up to diameter 1200 mm and length 2500 mm covers large flanges, sleeves, and disc parts. Slender shafts up to L/D 15:1 can be reviewed, with shaft tolerance around +/-0.01 mm or h6 and h7 classes, plus runout around 0.012 mm. Long-shaft machining can use steady rests to control vibration and straightness, with straightness around 0.01 mm/1030 mm when the route supports it.
Milling for Structural Housings and Brackets
Three-axis milling travel of 3000 x 1600 x 1400 mm suits large housings, brackets, and frame-type alloy steel parts. Minimum wall thickness around 0.5 mm may be possible with stress-relief planning, and cavity depth-to-width ratios around 4:1 can be extended to 5:1 with long tools. Mounting face flatness around 0.02 mm and perpendicularity around 0.02 mm/1000 mm can be reviewed to the drawing.
Thread and Keyslot Machining for Shafts and Flanges
Thread range covers M1.4-M220 and NPT, BSP, G, and PT pipe threads, with effective blind-hole thread depth up to 50 mm. Keyways can start from 1.0 mm width and retaining-ring grooves from 0.5 mm width. Threads are checked by go and no-go gauges, with expectations of clean tooth form and burr control.
Batch Inspection and Traceability for Supply Orders
Batch supply can include CMM reports, heat treatment reports, and material certificates, including material proof or SGS environmental reports when specified. Critical dimensions and appearance points can be inspected item by item, while threads and fit bores can be checked with gauges on every part. Report format can follow the customer template.
Specifications
| Product Name | China Alloy Steel CNC Machined Parts |
|---|---|
| Manufacturer | XCM CNC |
| Factory Location | Shenzhen, Guangdong, China |
| Quality System | ISO 9001, ISO 13485, IATF 16949, GJB9001C |
| Machining Process | CNC turning, CNC milling, drilling, tapping, deburring |
| Material | Alloy Steel |
| Material Grade | 42CrMo, 40Cr, 20CrMnTi with grade and heat treatment route confirmed per order |
| Tolerance | +/-0.03 mm standard CNC tolerance, critical dimensions by drawing review |
| Surface Roughness | Ra 3.2 um general machined surfaces, Ra 1.6 um fit surfaces by requirement |
| Surface Treatment | Heat treatment, rust preventive oil, black oxide, or plating by order review |
| Max Part Size | 3-axis travel 3000 x 1600 x 1400 mm, lathe diameter 1250 mm x length 2000 mm, actual size depends on fixturing |
| Inspection | Dimensional inspection, FAI, material certificate, and heat treatment report by order requirement |
| Application | Powertrain shafts, gearbox parts, engineering machinery pins, wind power flanges, hydraulic components |
| Key Features | Shafts, flanges, couplings, hydraulic rods, rough-to-finish routing, protective packing |
| Critical QC Requirements | Material certificate, heat treatment report, key dimension sampling or full inspection scope, packing protection |
| Batch Range | 1 piece MOQ to repeat production batches by schedule review |
| MOQ | 1 Piece |
| Typical Lead Time | 10-15 business days after drawing review |
| Drawing Formats | STEP, IGS, DWG, PDF, X_T |
| Material Certificate | Material certificate and heat treatment report by order requirement |
| Heat Treatment | By drawing review |
Applications
Batch Supply of Powertrain Shafts and Gear Blanks
Typical Parts: Gear blank, drive shaft, connector sleeve
Alloy steel is suitable for high-load and fatigue-oriented power transmission parts, and repeat supply requires the grade, blank condition, and heat treatment reports to be locked first. The factory can coordinate material certificates, FAI, and dimensional sampling to the order requirement, while the actual application still depends on the customer drawing, service condition, and industry rules.
Reducer Shafts and Servo Drive Parts for Automation
Typical Parts: Reducer shaft, servo motor shaft, shaft sleeve
Automation drive parts often focus on coaxiality, fit faces, and batch consistency. After heat treatment, alloy steel is better suited to repeat loading and precision transmission. Turning and milling routes can be planned around bearing seats, keyways, and threads, while packaging can protect finished outer diameters and end faces.
High-Strength Pins and Hydraulic Rods for Construction Machinery
Typical Parts: Pin shaft, hydraulic rod, clevis connector
Construction machinery parts are more sensitive to impact load, wear faces, and rust protection cycle, and alloy steel grades such as 40Cr or 42CrMo can match those load targets better. Supply planning should confirm heat treatment, finish-machining allowance, and heavy-part packaging conditions together to avoid damage to fit faces during transport.
Repeat Orders for Flanges and Couplings in Wind Power and Heavy Industry
Typical Parts: Connection flange, coupling, support ring
Heavy energy components are often larger and more complex to fixture, and alloy steel suits main shaft connections and high-strength fastening structures. Repeat orders can build a stable supply interface around material lot control, rough-to-finish routing, and hole-pattern inspection, while actual machinable size still depends on the blank and the fixturing plan.
Why Choose Us
Qualified Systems and Equipment Coverage
XCM CNC can organize projects to ISO 9001, ISO 13485, IATF 16949, and GJB9001C system requirements, while arranging machining routes across DMG, Mazak, Matsuura, Brother, and other equipment brands. For batch alloy steel parts, this helps place heat treatment reports, dimensional reports, and delivery requirements into one supply flow.
Broad Size Range for Heavy Alloy Steel Components
We support machining from small connector-scale parts to large structural components, with three-axis travel up to 3000 x 1600 x 1400 mm and turning diameter up to 1250 mm. For flanges, main shafts, and couplings, this range supports more stable coordination between rough machining, heat treatment, and finish machining.
Tiered Equipment Strategy for Cost and Quality
XCM CNC uses a tiered equipment strategy that includes mainland China, Taiwan, Japan, and Europe or US sourced CNC machines. Lower-tolerance operations can run on domestic or Taiwan equipment, while tighter precision work can move to imported machines such as DMG and Mazak. That matching helps control cost without pushing simple work onto high-hour-rate machines.
Controllable Scheduling for Heavy Parts
Shafts, flanges, and hydraulic components often move across rough machining, heat treatment, and finish machining. The factory can schedule those steps backward from the delivery date and coordinate outside heat treatment with in-house finishing so heavy parts lose less time between operations.
Export Packaging and Repeat-Order Delivery Control
Export alloy steel components need rust protection, impact protection, and stable transport support, so packaging can use foam, cartons, or wooden cases according to part structure and transport method. Repeat orders can keep the same packaging standard and report template to reduce repeated confirmation before each shipment. Shipping can use DHL, FedEx, UPS, or sea freight.
FAQ
What alloy steel material certificates can your factory provide?
Material certificates can be supplied according to the order requirement, and the exact document type depends on the grade and purchase batch for 42CrMo, 40Cr, or 20CrMnTi. If heat treatment reports, dimensional reports, or FAI documents are also required, their format and coverage should be defined before order placement.
What is the MOQ for alloy steel CNC machined parts from China?
MOQ can start from 1 piece, which suits samples, low-volume orders, and repeat-order transition. Actual price and lead time still depend on grade, heat treatment, rust protection, and production scheduling.
Can you coordinate heat treatment reports for batch alloy steel components?
Yes. Heat treatment and the related finish-machining route can be coordinated together according to the order requirement, along with the matching reports. For carburized, nitrided, and quench-and-temper parts, the process sequence and reinspection plan are normally confirmed first.
What inspection reports are available for exported alloy steel shafts, gears, or flanges?
Dimensional reports, FAI, material certificates, and heat-treatment-related reports can all be provided according to the order requirement. For shafts, gear blanks, and flanges, it is better to define the file scope during drawing review.
How do you package heavy alloy steel shafts or couplings for shipping?
Heavy alloy steel products can use rust-preventive oil, separators, foam, cartons, or wooden cases according to weight, structure, and transport method. For shafts and couplings, the main packaging goals are impact protection, rust prevention, and avoiding mixed batches. Shipping can use DHL, FedEx, UPS, or sea freight.
Can your factory machine larger alloy steel shafts or flanges?
Yes. Medium and large alloy steel flanges and shafts can be evaluated to the drawing, with three-axis travel up to 3000 x 1600 x 1400 mm and turning capacity up to diameter 1250 mm and length 2000 mm. The actual machinable size still depends on the blank, the fixturing method, and later process planning.
Request a CNC Machining Quote from XCM CNC
Send us your drawings. Our team will review the file and reply with a machining quote. MOQ: 1 piece, with competitive low-cost pricing.
Email: [email protected] | WhatsApp: +8618638951317
