Custom CNC Milled 321 Stainless Steel Shaft Support Bracket With Keyway
Product Overview
The CNC Milled 321 Stainless Steel Shaft Support Bracket is a one‑piece support base engineered for precise shaft location and torque transmission in demanding environments. Machined from 321 stainless steel (AISI 321 / 1.4541) — a titanium‑stabilized austenitic grade resistant to high‑temperature oxidation and intergranular corrosion — the bracket combines a bored cylindrical sleeve with an integral keyway and a flat mounting base featuring a recessed pocket and two tapped holes. The monolithic construction eliminates joint stacking, holding alignment and rigidity under load. Ideal for OEM projects in heat‑exposed equipment, chemical processing supports, drive systems and instrumentation platforms, this component ships from single‑piece prototypes to high‑volume production with documented tolerance control.
Part At A Glance
Material
321 Stainless Steel (AISI 321 / EN 1.4541, titanium‑stabilized)
Manufacturing Process
CNC Milling (3 / 4 / 5‑Axis available)
Surface Finish
As‑machined bright; passivation or electropolishing optional
Heat Treatment
Stress relief annealing available on request
Sleeve Bore
Precision bored for shaft fit; keyway produced by CNC milling, tolerance per drawing
Mounting Base
Recessed pocket plus two tapped holes; hole pattern per drawing
Structure
One‑piece milled body — sleeve and base machined from a single billet
Order & File
1 piece prototype to high‑volume; Accept STEP / STP / IGES / PDF
Manufacturing Capability
| Feature | What We Deliver |
|---|---|
| One‑Piece Milling | Sleeve, keyway, pocket and base are machined from a single billet in one setup sequence, preserving bore‑to‑base perpendicularity |
| Keyway Machining | Keyways produced by CNC milling with width and symmetry verified against drawing tolerances |
| Bore Accuracy | Bores finished on CNC equipment for concentricity and consistent shaft fit |
| Stainless Expertise | Tooling and coolant strategies tuned for 321 stainless steel to control work hardening and hold surface quality |
| Production Scalability | From single‑piece prototypes to small‑batch and high‑volume production on the same line and the same tolerance standard |
| Tolerance | Standard ±0.01 mm; ±0.005 mm on critical features |
Quality Control & Buyer Benefits
| Item | Details |
|---|---|
| Three‑Stage Inspection | First‑article, in‑process and final inspection performed on every order; dimensional reports issued with each shipment |
| Keyway Verification | Keyway width, depth and symmetry checked against drawing tolerances |
| Geometry Checks | Bore‑to‑base perpendicularity and hole‑position accuracy verified before release |
| Material Traceability | Mill certificates for 321 stainless steel available on request |
| Protective Packaging | Individual wrapping and partition packaging prevent surface and edge damage in transit |
Typical Applications
Quality You Can Verify, Not Just Trust
Shenzhen Perfect Precision Products Co., Ltd. runs a 20‑year‑old factory with 6,000 square meters of floor space, 100+ CNC machines and a full ERP system.
- Four‑stage control: incoming material checks, first‑piece inspection, batch sampling and 100% pre‑shipment QC.
- Digital proof: 3D inspection equipment, mill certificates, material certificates and inspection reports on request.
- Traceability: every titanium batch runs through the ERP, so lots are easy to follow and repeat.
- After‑sales: report any issue by call, video conference or email within one month; our team responds with a solution within one week.
Samples And Lead Times
- ·Sample: 1‑2 weeks
- ·Production: 3‑4 weeks after approval
- ·Quote: send PDF, STEP, IGS or DWG, or simply photos and size notes of the part you need
About Us
Processing Material
Application
POSITIVE FEEDBACK
FAQ
1. Are you a manufacturer or a trading company?
We are a factory located in Shenzhen, China, with 20 years of rich experience, covering 6000 square meters. Complete facilities, including 3D quality inspection equipment, ERP system and 40 machines. If necessary, we can provide you with material certificates, sample quality inspection and other reports.
2. How to get a quote?
Detailed drawings (PDF/STEP/IGS/DWG...), including quality, delivery date, materials, quality, quantity, surface treatment and other information.
3. Can I get a quotation without drawings? Can your engineering team draw for my creativity?
Of course, we are also glad to receive your samples, pictures or detailed size drafts for accurate quotation.
4. Can you provide samples before mass production?
Of course, the sample fee is necessary. If possible, it will be returned during mass production.
5. What is the delivery date?
Generally, the sample lasts for 1‑2 weeks and the batch production lasts for 3‑4 weeks.
6. How do you control quality?
(1) Material Inspection ‑ Check material surfaces and approximate dimensions.
(2) First inspection of production ‑ ensure critical dimensions in mass production.
(3) Sampling inspection ‑ check the quality before delivery to the warehouse.
(4) Preshipment inspection ‑ 100% inspection by QC assistant before shipment.
7. After‑sales service team
If you have any problems after receiving the product, you can provide feedback through voice call, video conference, email, etc. within one month. Our team will provide you with solutions within a week.
