Custom Machined Bushings and Sleeves
DEK turns plain sleeve bushings, flanged bushings, guide bushes, reducer sleeves and wear sleeves from bronze, brass, steel, stainless and engineering plastics. Bore size and concentricity decide whether a shaft runs smoothly or seizes.
We hold ±0.005 mm on bore and OD, with ground bores at Ra 0.2–0.4 µm where the print asks for it. Bushings sit alongside shafts and pins in our custom CNC machined parts catalogue.
Types of Bushings We Machine
From plain sleeves to self-lubricating bushings, turned from bronze, brass, steel, stainless and plastic bar to your print.
Bushing Materials, Processes & Tolerances
Bearing bronzes to hardened steel and PTFE, turned in one chucking and ground when the fit calls for H6.
Design Tips for Custom Bushings
Fits, walls and chamfers decide whether a bushing installs cleanly and stays round in service.
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Press-Fit by Tolerance Class
Call interference by class (Ø20 s6). In bronze the bore closes by roughly 70–90% of the interference.
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Wall Thickness in Bronze
Keep wall thickness at 8–12% of shaft diameter in bronze so the bushing stays round when pressed.
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Lead-In Chamfers
Add a 0.5 × 45° lead-in chamfer on both bore and OD to avoid shaving the housing on installation.
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Flange Runout to Bore
On flanged bushings, tolerance flange runout to the bore (0.02 mm is practical), not only flange thickness.
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Oil Groove Ends
Stop oil grooves 1–2 mm short of both ends to keep lubricant inside the bushing during service.
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Plastic Running Clearance
Give plastic bushings 0.5–1% more running clearance than metal for thermal expansion and moisture uptake.
What to Call Out on Your Drawing
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Bore and OD Class
State bore and OD tolerance class, for example H7 or H6 bore and p6, s6 or h6 OD, so the fit is unambiguous.
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Fit Before or After
Say whether the bore fit applies before or after installation; if the installed bore matters, dimension it that way.
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Material and Hardness
Name the grade and hardness: 4140 at 28–32 HRC, 440C at 56–58 HRC or case-hardened 8620 at 58–62 HRC.
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Order Quantity Needed
Give the quantity: a single replacement bushing or a 10,000-piece run gets the same engineer-reviewed quote.
Applications & Industries
Bushing machining for agriculture and construction pivots, automation guide bushes, marine rudder and davit bushings, and medical dry-running bushings.
Why DEK for Custom Bushings Manufacturing
Ground-bore discipline since 2002, verified materials and documented inspection on every bushing order.
Certified Quality by TÜV
DEK is ISO 9001:2015, ISO 13485 and AS9100D certified by TÜV. Every bushing is held to ±0.005 mm on bore and OD with 0.005 mm concentricity, documented in reports you can review before shipment.
Certified Quality for Every Bushing
Bushings are made under ISO 9001:2015, ISO 13485 and AS9100D, certified by TÜV.
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AS9100D
Aerospace Quality Management System
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ISO 9001:2015
Quality Management Standard
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ISO 13485
Medical Devices Quality Management
Frequently Asked Questions
Answers on custom sizes, sleeves versus bushings and small flanged bushing orders.
Get a Quote for Custom Machined Bushings
Send your drawing and get an engineer-reviewed quote within 6 hours, for one replacement bushing or a 10,000-piece run.
- Bore and OD tolerance class
- Material and hardness
- Quantity, no MOQ
- Bore fit before or after installation
- Prototypes ship in 3–5 days







