5-axis milling
Impellers, housings and manifold blocks in a single setup, with in-process probing on every pallet changer.
CNC machining and mill-turn · Grand Rapids, Michigan
Tight-tolerance parts, quoted in one business day.
Northfield Precision Works runs 5-axis milling, mill-turn and small-batch production for medical, automation and defence buyers who need a dimensional report with every lot. Upload a STEP or PDF and a manufacturing engineer replies with price breaks, lead time and material certificate options before anyone asks you to chase.
First-article inspection is standard on every new part number.
Plant capacity at a glance
- CNC spindles under one roof
- 41
- Typical quote turnaround
- 24 h
- On-time delivery last year
- 98.4%
- Years machining in Grand Rapids
- 38
From one prototype to ten thousand pieces
Most jobs land in aluminium, stainless or engineering plastic, but the same team handles titanium brackets and PEEK insulators when the drawing calls for them.
Mill-turn and turning
Live tooling on lathes up to 320 mm swing for shafts, fittings and hydraulic bodies that would otherwise need two operations.
Inspection and finishing
CMM reports, deburr, passivation and anodising through audited partners, all referenced on the packing slip.
Lot traceability
Heat numbers, tool life logs and operator badges travel with each box so your quality team can audit without a phone call.
Drawing to labelled carton
- 01
Upload and review
An engineer checks tolerances, suggests design-for-manufacturing tweaks and flags any missing datums before pricing.
- 02
Quote with breaks
You receive quantity breaks, material certificate level and a realistic lead time, usually within twenty-four hours.
- 03
First article
The first piece is measured on the CMM and held until you approve the report or request a revision.
- 04
Production and ship
Lots are labelled per your PO, packed with inspection data and shipped on the date we committed to.
Machine park
Select a column heading to sort. Names describe machine class, not a vendor model number.
| VMC-1100 | Vertical machining centre | 3 | 1,100 mm | 12,000 rpm | 9 |
|---|---|---|---|---|---|
| 5AX-650 | 5-axis trunnion | 5 | 650 mm | 20,000 rpm | 6 |
| HMC-800 | Horizontal machining centre | 4 | 800 mm | 10,000 rpm | 4 |
| TL-320Y | Mill-turn lathe | 5 | 320 mm | 4,500 rpm | 8 |
| SW-32 | Swiss-type lathe | 7 | 32 mm | 10,000 rpm | 7 |
| VMC-1600 | Large vertical | 3 | 1,600 mm | 8,000 rpm | 3 |
Four decades on Division Avenue
The shop grew by adding shifts, not by buying brands customers do not care about.
- 1987
Two verticals and a fax
Tom and Elena Northfield quote jobs from a paper tray and run first-shift only.
- 2004
5-axis arrives
Impeller work for a regional aerospace supplier pays for the first trunnion machine.
- 2016
Medical clean room
A segregated cell with dedicated tooling serves instrument OEMs under ISO 13485.
- 2024
Night shift
Lights-out pallets on two horizontal centres cut lead times without hiding overtime from buyers.
Buyers who return
“Northfield caught a radius that would have bound in our assembly before we released the drawing company-wide. That one email saved a recall.”
“Their first-article reports land in our quality portal with no retyping. When a dimension is out, they call before shipping, not after.”
“We moved three jobs from overseas when lead times stretched. Northfield matched the price on two of them and beat it on the third.”
Questions procurement asks
What is your minimum order?
One piece for prototypes. Production pricing typically starts at fifty pieces, but we will run smaller lots when the geometry demands it.
Do you supply material certificates?
Yes. EN 10204 3.1 certificates are standard; 3.2 is available on request for critical applications.
Can you work under our quality plan?
We support PPAP levels one through three and will sign your NDA before opening a drawing.
Which file types do you prefer?
STEP, IGES or native SolidWorks. PDF drawings are fine for quotes but we ask for a model before cutting metal.
Send a drawing for review
Attach a model or PDF up to twenty megabytes. In this preview the file stays in your browser and nothing is uploaded.
Tour the shop floor
Buyers are welcome on Tuesday mornings. Bring a printout and we will walk the cell that would run it.