Custom CNC Milled Black Delrin Lever Arms With Stepped Shafts And Pin Holes
Why This One-Piece Lever Wins
A lever that is glued, pinned or bolted together develops play. A lever machined from one solid piece of Delrin keeps every step, shoulder and hole in exact relation, from the first cycle to the millionth.
·No assembly, no play. Arm, boss and shaft are one part, so nothing loosens under repeated motion.
·Stepped shaft, engineered hold. Each diameter change seats in a matching bore or bearing, and the flat‑milled base face stops rotation where it matters.
·Pin hole exactly where it should be. The cross hole at the shaft tip is positioned to print, so retaining pins and wires fit without rework.
·Low friction, no grease needed. The material slides quietly against metal partners in most indoor service.
·Moisture will not move it. Low water uptake keeps the arm flat and the shaft true in humid or washdown areas.
Part At A Glance
Material
black Delrin (POM homopolymer / acetal), milled from solid bar
Arm
flat, elongated, rounded outer end with clean edge radii
Boss
thickened base where arm meets shaft, filleted for strength
Shaft
perpendicular post with multiple stepped diameters
Anti‑rotation feature
flat milled onto the shaft base, ready for a keyed housing
Pin hole & Finish
transverse through hole near the shaft tip; uniform matte black, burr‑free edges
Illustrated sample: arm about 37 mm long, shaft about 35 mm high; your dimensions can differ. One drawing gives you one part that turns, holds and repeats. That is the whole point.
Black Delrin Material Profile
| Property | Value In Machined Parts | Why It Matters For Levers |
|---|---|---|
| Coefficient of friction | Low | Smooth, quiet actuation against metal bores |
| Stiffness | High, low creep | The arm holds its position under load |
| Moisture absorption | Very low | Flatness and shaft truth survive humidity |
| Wear resistance | High | Long life in repeated lever motion |
| Impact strength | Good | Survives snags and overloads without shattering |
| Chemical resistance | Resists most solvents, fuels and alkalis at room temperature | Fits machinery near oils and washdown |
| Machinability | Excellent | Crisp steps, clean pin holes, dependable tolerances |
| Grades | Natural or black; food‑contact compliant grades on request | Covers food and beverage line equipment |
CNC Milling Capability Table
| Feature | What We Deliver |
|---|---|
| Arm milling | Flat profiles, rounded ends, edge radii, boss forms |
| Shaft milling | Stepped diameters, shoulders, flats and keyed faces |
| Drilling | Pin holes, cross holes and mounting holes to print position |
| Tolerance | Standard plus/minus 0.05 mm; critical features reviewed to tighter values |
| Finish | Matte or satin as‑machined, fully deburred, ready for assembly |
| Order size | Prototypes from 10‑50 pieces; production runs to 100,000 pieces |
| Files accepted | PDF, STEP, IGS, DWG; samples and sketches also welcome |
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, material certificates and inspection reports on request.
- Traceability: every 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, 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.
