What Is A Scaled Handle Wheel (And Why Machine It In Aluminum 6061-T6)?

A scaled handle wheel - also called a graduated handwheel, marked knob, or counting dial - is the manually-operated adjustment knob on equipment where the operator needs to see by how much the setting has moved. The wheel is turned by hand; the laser-marked scale tells the operator where they are.

Two design choices drive the specification:

Bore fit - the inner diameter of the wheel mates to a shaft, threaded stub, or bushing on the motor case. A loose bore gives slop; a tight bore can't be assembled. Honing the ID to a controlled tolerance gets the wheel on the shaft cleanly and keeps it there under repeated use.

Surface hardness - operators turn these wheels daily. Bare 6061-T6 will mark up and corrode. Black anodizing builds a Type-II oxide layer that locks into the surface, restoring hardness and giving the part the deep black finish that signals precision in instrumentation.

A scaled handle wheel is small, but it carries the brand. Get it wrong and the whole motor case looks amateur.

Item Name	Scaled Handle Wheel
Material	Aluminum
Surface	Black anodized
Tolerance	+/-0.01mm
Process	Machining, honed ID, laser marking
Shape	square/rectangle/roundness etc.(customized)
Samples	Available
Package	Plywood case
Brand	SXFD,OEM
Lead time	30-45 days
Delivery way	EXW, FOB, CIF, etc.
Shipping	By sea, air, train, express etc.
Origin	China
Quality	100% QC assurance
Payment	T/T, Western Union, Paypal, L/C .
PO step	sending drawing-evaluating-quoting-sampling-testing-feedback-mass production-inspection-packing-shipping.

Values above reflect typical configurations. Final dimensions and tolerance depend on the print. Bring us the 3D model and we will return a feasibility note with the quote.

Key Features At A Glance

Material: Aluminum alloy 6061-T6 (AMS-QQ-A-250/11 compliant mill stock)
Process: High-speed lathe turning + 3-axis CNC machining + ID honing + laser marking
Tolerance: ±0.01 mm on critical machined features
Surface finish: Black anodized (Type II per MIL-A-8625, dyed black)
OD scope: knurled wheels, plain wheels, multi-spoke wheels, flanged wheels, dual-drive wheels - all from your drawing
Bore range: Ø 4 mm – Ø 30 mm honed; keyway, setscrew, or D-shaft profiles by request
Scale marking: laser-marked graduations, serial numbers, part numbers, or logos; numeric or custom layouts
Origin: China - full process control in-house from blanking to packing
Lead time: 30–45 days after PO confirmation (small-batch prototypes faster)
Packaging: plywood export case, foam separated, suitable for sea or air transit

Material Options

Default: Aluminum 6061-T6
6061-T6 is the workhorse of the machined aluminum world. It machines cleanly, anodizes predictably, and threads acceptably for a knob. We stock 6061-T6 bar and billet to AMS-QQ-A-250/11 and ASTM B221. The mill certificate travels with every lot.

Other Alloys We Run

Aluminum 6063 - for heavier cosmetic anodized parts, slightly better surface finish
Aluminum 7075-T6 - higher strength when a knob sees torque load
Aluminum 2024 - used where fatigue life matters
Brass C360 / C260 - for laser-marked knobs that need a free-cutting alloy
Stainless steel 303 / 304 / 316 - for knobs in wash-down or marine environments
Engineering plastics (POM, Delrin, peek) - when the part needs to be electrically insulating or self-lubricating

Tell us about the environment the knob lives in, and we will propose an alloy set.

Process Capability

Our shop is set up for medium-to-high mix, low-to-medium volume machined parts. The scaled-handle-wheel line covers:

Lathe Work
High-speed CNC lathes for Ø 20–150 mm turned blanks
Live tooling for cross-drilled and cross-milled features without re-fixturing
Sub-spindle work for through-bores and ID turning

3-Axis CNC Milling
Vertical machining centers with 4th-axis rotary table for wheels with peripheral lettering
Pallet-changer cells so small batches don't sit waiting for tooling
Familiar with thin-wall knurled wheel geometries - fixtures custom-cut to keep runout under 0.02 mm

ID Honing
The bore of a handwheel either has to slide on a shaft or grip a threaded stub. We hone the ID after rough turning to remove the chatter pattern left by the lathe and to reach the bore tolerance and surface finish your drawing calls for.

Laser Marking
Scale graduations, logos, part numbers, and lot codes are fiber-laser marked after anodizing. Marking on the anodized surface is permanent, high-contrast, and resists solvents, oils, and the abrasive contact of regular operator use.

Edge Break & Deburr
Every sharp corner - whether called out as a chamfer or implied for hand-safety - is broken with hand-deburr for low batches or a vibratory / tumbler finish for high batches. No sharp edges on a knob an operator touches all day.

Surface Treatment
Black Type-II anodizing (MIL-A-8625) is standard. Type-III hard anodizing (hard-coat) is offered where the knob needs to stand up to abrasive environments. Custom dye colors (red, blue, gold, gray) are run on RFQ volume.

Mechanical Assembly (Optional)
Knob + set screw + brass bushing + retaining ring - we can source the standard hardware, assemble under controlled torque, and ship the part ready to mount.

Tolerance, Surface Finish & Inspection

Feature	Typical Capability	Notes
Bore diameter	±0.01 mm, honed to H7	Custom h6 fit on request
Outer diameter	±0.02 mm	Turned on high-speed lathe
Face perpendicularity	0.02 mm	Critical for knob-to-shaft alignment
Runout, bore-to-OD	≤ 0.03 mm	Live-tooled to minimize stack-up
Surface roughness (dial face)	Ra 0.8 µm	Polished dial for clear reading
Surface roughness (cylindrical)	Ra 1.6 µm	As-machined or bead-blasted for grip
Anodize thickness	Type II: 10–25 µm; Type III: 25–50 µm	Edmark-tested to MIL-A-8625
Marking depth	0.05 mm typ.	Fiber-laser mark; high contrast on black anodize

CMM and digital bore gauges are used on every production lot. First-article inspection report ships with the first batch of every new part number.

Typical Applications

Motor cases & gear reducers - graduated handwheel for speed / position / tension adjustment
Valve actuators - manual override knob with position scale
Machine tools - feed selectors, fine-adjust handwheels on milling and EDM machines
Packaging machinery - timing adjustment knobs on form-fill-seal units
Medical & laboratory instruments - analytical instrument fine-tuning wheels (ISO 13485 on RFQ)
Optical instruments - focusing and zoom handwheels
Specialty vehicles - handbrake or valve controls in marine / off-highway applications

If your operator has to set a value by feel, scale, and a turn of the wrist - this is the part that does it.

Customization & OEM Service

We are an OEM / ODM machine shop first. Tell us what the knob needs to do and we will propose the geometry, alloy, and finish.

From drawing, 3D model, sample, or sketch - STEP, IGES, DWG, DXF all accepted

Knob geometry: knurled / fluted / spoked / straight / flanged / dual-drive - see-through and index-handle variants
Bore profile: straight, D-shaft, keyway, threaded, hex, splined; with or without cross-drilled set-screw holes
Scale & marking: numeric, alpha-numeric, tick-mark, color-band, custom gauge layout; brand logo etched
Color & finish: black, natural, gray, red, blue anodized; bead-blasted grip surfaces; polished dial face
Branding on the part: SXFD standard, or OEM logo etched on the back face or inside the bore (not visible after assembly, keeps the brand in your inventory record)
Pre-assembly: knob + setscrew, knob + bushing, knob + retaining ring, knob + lockwasher - built to your BOM

Sampling for new programs: 3–7 working days for most drawings, 10–15 days if fixture design is required from scratch.

Quality Control

A machined knob is small. A quality control lapse on a small part is what bites you six months later when 800 motors get reworked at the dock.

Incoming material verification - mill cert tied to heat number on every bar / billet lot

First-article inspection - full dimensional report, signed by the inspector, with your print overlaid

In-process checks - at lathe exit, post-mill, post-anodize

Final inspection - 100% visual + 100% critical-feature dimensional, sample-based cosmetic

CMM measurement - on first article and on a per-batch sample rate

Anodize thickness test - eddy current or microscopic cross-section per MIL-A-8625

Mark durability - sample-based solvent rub test for laser markings

Traceability - heat number, batch number, machine, operator, inspector, date written on the traveler that ships with the part

Third-party inspection (SGS, BV, TUV) is welcomed on the floor.

one-stop solution

professional team

high quality

Packaging, Marking & Shipping

Inner pack

each knob in an individual polybag, with foam separating layers

Outer pack

plywood export case, ISPM 15 compliant; plastic-lined against moisture

Markings

part number, lot number, quantity, gross/net weight, destination port on three sides of the case

Documents

commercial invoice, packing list, mill certificate, first-article inspection report, and (on

We ship EXW, FOB, CIF, CFR, or DAP. Sea for production volumes, air or courier for replacement and spares, rail into Central Asia and Europe.

Lead Time & Ordering Workflow

Send your drawing / model / sample - STEP / IGES / DWG / DXF / PDF, or a physical sample
Engineering review - within 1–2 working days, we confirm feasibility, material availability, and flag any print issues
Quotation - unit price, tooling (if any), lead time, payment terms
Sample production - prototype unit made and shipped (billable; credited on first production PO)
PO & deposit - order confirmed against the approved sample
Production - in-house from blank to anodize; progress photos and milestone reports on request
Inspection - in-house QC + optional third-party
Packing & shipping - full traceability documents to your forwarder or nominated courier
After-sales - feedback tracked per lot; replacement or rework handled within 48 hours

Typical production lead time is 30–45 days. Sample-only orders go out in 10–15 days for most drawings.

Payment Terms

T/T

30% deposit, 70% balance against B/L copy (most common for production orders)

L/C at sight

for container-volume orders on confirmed credit

Western Union / PayPal

for sample orders and small spares

Open-account terms

negotiable for established customers after the first three shipments

FAQ

Q: Can you match a sample knob I already use?

A: Yes. Send the sample with a quick sketch of the bore size, the marking style, and the application. We reverse-engineer the geometry, confirm the alloy, and quote against your typical order quantity.

Q: What is your minimum order quantity?

A: For the scaled-handle-wheel line, MOQ is typically 50–100 pieces per part number to keep unit cost sensible. Tooling-heavy new parts may have a higher first-batch floor.

Q: What tolerance can you actually hold?

A: ±0.01 mm on critical features such as the honed bore, the perpendicularity between bore and dial face, and the runout. General machined features default to ±0.05 mm. Tighter work (sub-0.01 mm) is possible on RFQ but adds cycle time.

Q: Do you do the laser marking in-house?

A: Yes. We run a fiber-laser marking station after anodizing. Marking is permanent and survives normal solvent wipe, abrasion, and aging.

Q: Can you ship a knocked-down kit instead of an assembled wheel?

A: Yes. We can ship the knob alone, or the knob plus pre-cut set screws, bushings, retainers, and other small hardware bagged and labeled per kit. Tell us your BOM and we will kit it.

Q: Can you handle small-volume prototype runs?

A: Yes. We routinely run 10–50 piece prototype orders with manual or soft-jaw fixturing. Production price is reserved for repeat orders.

Q: How do you handle quality disputes?

A: Each batch carries its traveler with heat number, machine, operator, and inspector codes. When a problem is raised, we pull the record within 24 hours and decide on credit / rework / replacement against the inspection data.

Why Work With Us

Process in one place.

Lathe, 3-axis milling, ID honing, laser marking, anodizing, packing - all under one roof, so the spec you sign off on the sample is the spec that arrives in the container.

Documentation that survives an audit.

Mill cert, first-article inspection, anodize thickness report, marking durability check - all available on request.

Knob expertise.

Handwheels, knobs, dials, scales - this is a daily line for us, not an off-the-shelf item we hope gets right.

MOQ that respects prototype.

We run prototypes, low-volume ramp, and production on the same equipment and the same people.

Request A Quote

Your drawing or 3D model (STEP / IGES / DWG / PDF) - or a sketch / sample with the bore size and the marking you want

Material preference (6061-T6, other aluminum alloy, brass, stainless)

Surface treatment (Type II black anodized; Type III; colored; bead-blasted grip; polished dial)

Quantity and target delivery date

We will return a written quote, a manufacturing plan, and a sample timeline within 1–2 working days.

Send Inquiry Now

High Precise Machined Scaled Handle Wheel For Motor Case