| Parameter | Specification |
| Material | AISI 304 / 316 Stainless Steel |
| Process | CNC Turning + Milling |
| Bore Tolerance | ±0.005mm (IT6-IT7) |
| Concentricity | 0.008mm TIR |
| Outer Diameter | 3mm – 200mm |
| Slot Width | 0.5mm – 3mm (precision slit) |
| Bolt Hole | M3 – M10, tapped or clearance |
| Surface Finish | Ra 0.8 – 3.2μm; Passivation / Bead blast |
| Application | Shaft locking, bearing retention, linear stops |
A shaft clamping collar is a one-piece, slotted stainless steel ring that mounts onto a round shaft to lock components in place, provide positive axial location, or act as a mechanical stop. At Rejin CNC, we machine these collars from solid 304 or 316 stainless bar stock on precision CNC lathes and machining centers.
The axial slit, bolted lugs and precision-bored inner diameter work together: tightening the screw compresses the ring around the shaft, creating a high-friction, zero-backlash grip that transmits torque and prevents axial movement without keyways or set screws that damage the shaft surface.
Manufacturing is completed in controlled stages: CNC turning of the outer diameter, bore and facing; live-tool milling of the slit, lug flats and through-holes; chamfering and deburring; then passivation and optional fine polishing. Bore concentricity is held to ±0.005 mm and every collar is gauge-checked against your shaft diameter before packing.
Typical applications include linear guide stops, bearing retention, pulley and sprocket mounting, actuator rod locking, and fixture locating in automation cells, robotic joints, packaging machinery and medical devices.
Axial slits and bolted lugs milled in one setup. Uniform slot width ensures even clamping force without bore distortion.
Inner diameters turned to IT6-IT7 with concentricity as tight as 0.005mm. One-hit turning ensures true roundness and smooth shaft fit.
From aerospace-grade aluminum to medical-certified engineering plastics, our in-house CNC machining centers work a broad range of metals and plastics under one roof.
Don’t see your material? Send your drawing for review — we will confirm availability and quote it.
Functional and cosmetic finishes applied in-house or through vetted partners.
Type II protective anodize, natural silver finish.
Type III hard coat, wear-resistant black.
Blue, red, gold, green dye for audio and 3C.
Uniform matte texture, hides machining marks.
Durable corrosion-resistant RAL colors.
Removes free iron, boosts stainless corrosion.
Zinc, nickel, chrome, tin for connectors.
Permanent non-contact logos and serials.
A professional manufacturer specializing in custom, non-standard CNC machining of mechanical parts. We can tailor-make a wide range of special housings and other coffee machine components according to customer requirements, with a broad selection of materials available. Feel free to contact us for inquiries!
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<p>Assembled aluminum turning components combine multiple turned and milled features in one part: a hex wrench body for tool engagement, a precision bored hub for shaft fit, and a saw slot or split for clamping. These parts serve as locking nuts, shaft collars, clamping bosses and adjustable fasteners across machinery, robotics and optical equipment.</p><p>Our live-tool lathes machine the hex, bore and slot in a single setup, ensuring the bore is concentric with the hex and the slot aligns with the clamping axis. +/-0.005mm bore tolerance and in-house anodizing give a dimensionally stable, corrosion-resistant finished component.</p>
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Custom CNC turn-mill aluminum flange adapters and mounting plates with precision hole patterns, threaded holes and concentric locating faces for reliable assembly.
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High-efficiency VMCs for prototype, mid-volume and large-batch metal parts production.
Integrated drilling, tapping and milling shortens lead time for aluminum enclosures.
Combined drilling-milling lines support both small batches and volume OEM orders.
Well-organized production zones support everything from one-off parts to mass programs.
Systematic line layout raises machining efficiency and guarantees on-time delivery.
Complete CNC equipment set enables stable continuous running for OEM volumes.
Dongguan, China · 200+ CNC machines · In-house anodizing & laser cutting · Visitors and third-party inspections welcome.
Fully certified quality management system. Every batch ships with material certificates and inspection reports you can trust.
Our engineers review every drawing upfront — flagging tolerances, undercuts and cost drivers before a single chip is cut.
Custom foam, wooden crates and FBA-ready packaging. Door-to-door freight to 60+ countries with full tracking.
Your message lands directly with our senior engineers — instantly acknowledged.
We study your requirements and propose a workable solution with material & process options.
Detailed quotation with specs, options and lead time — no hidden fees.
Approve the sample, then we mass-produce with full QC and on-time shipping.
WhatsApp: +86 13790500374
Email: info@rejincnc.com
Your CAD files are kept strictly confidential. Quotation within 24 hours.