Ag & Construction Equipment Machining

Ag and construction equipment manufacturers need a shop that can handle components most job shops physically cannot: big plates, long weldments, heavy shafts, parts you plan a crane lift around. Capacity is the first filter, and it eliminates most of the supply base before tolerance ever comes up.

It also needs a shop that works the way this industry buys. Demand is seasonal. Fleets stay in service for decades. Drawings are often older than the engineer holding them. Steelcrest Precision machines structural and precision components for equipment OEMs and their suppliers out of Wauseon, Ohio, in quantities from a single replacement through recurring releases.

Agricultural and construction products CNC machining is the production of precision components and tooling used by manufacturers of siding, roofing shingles, flooring, doors, windows, and other building materials. Common parts include forming rollers, shafts, pins, bushings, dies, product guides, wear components, mounting plates, fixtures, and replacement tooling used in forming, cutting, conveying, and assembly equipment.

CNC turning produces rollers, shafts, pins, and bushings, while CNC milling creates housings, plates, guides, and fixtures. Precision grinding and EDM finish hardened tooling, critical wear surfaces, and detailed profiles. Steelcrest Precision combines these capabilities with reverse engineering and in-house inspection to help manufacturers replace worn or obsolete components, reduce equipment downtime, and maintain consistent product quality across long production runs.

Our machinists and engineers support the equipment and tooling used to manufacture siding, roofing shingles, flooring, doors, windows, and other building products. Whether a component requires CNC turning and Swiss machining, large-format or multi-axis milling, or precision grinding and EDM, Steelcrest produces rollers, shafts, dies, guides, wear components, fixtures, and replacement tooling machined to print and verified before shipment.

Our toolmaking heritage brings production machining and practical problem-solving together under one roof. We work directly with engineering and maintenance teams from drawing review through the finished component, planning the material, workholding, machining sequence, and inspection approach around the application. When a worn or obsolete part threatens production, our reverse engineering capabilities help recreate its critical geometry and return a dependable replacement, backed by four decades of experience and more than 100 CNC machines.

Carbon & Alloy Steels

Structural and load-bearing components, from plate and bar through heavy shafts. Supplied annealed where the part gets heat treated after machining, or pre-hardened where the finished hardness comes from the mill.

Grade	Typical Application
1018	Bushings, spacers, general machined hardware
1045	Shafts, pins, and rollers
4130	Tubular and welded structural components
4140	Pivot pins, heavy shafts, pre-hardened plate details
4340	High-load pins and drive shafts
8620	Case-hardened gears and splined components
9310	High-strength transmission and gear components

Wear-Resistant Steels

Abrasion-resistant plate for the surfaces that take the most punishment. Machined and ground flat after cutting, because AR plate rarely arrives flat enough to bolt straight on.

Grade	Typical Application
AR400	Wear plates, liners, ground engaging components
AR500	Severe abrasion surfaces and high-impact liners

Stainless Steels

Corrosion resistance for components exposed to fertilizer, road salt, and washdown, plus hydraulic and fluid-handling details.

Grade	Typical Application
304	General corrosion-resistant hardware and fittings
316	Chemical and fertilizer exposure components
410	Hardenable stainless for wear and valve components

Aluminum

Weight reduction on cab, guard, and enclosure components, and fast cutting on lower-volume brackets where setup time drives the cost.

Grade	Typical Application
6061	Brackets, enclosures, mounting plates
6063	Extruded rail and trim components

Engineering Plastics

Bushings, guides, and wear pads that run without lubrication and routinely outlast the metal components they replaced.

Grade	Typical Application
UHMW-PE	Wear pads, slides, boom guides
Nylon 6 and 6/6	Bushings, rollers, sheaves
HDPE	Guards, liners, low-load wear components

Equipment Machining Capacity and Tolerances

Building-products manufacturing requires more than enough machine travel to fit the part. It requires workholding that controls long or heavy components, processes that preserve critical feature relationships, and tooling built to perform across demanding production runs. Every project at Steelcrest begins with a review of the print, material, geometry, tolerances, and production requirements so the right machining and inspection plan is established before metal moves.

✓ Large-Format & Long-Part CNC Milling: Large-format milling accommodates plates, fixtures, and tooling up to 80" × 50", while long-part milling supports rails, guides, and structural components up to 120" × 20", with standard tolerances of ±0.001".

✓ Horizontal Machining for Multi-Sided Components: Horizontal machining centers handle parts up to 64" × 50" × 32", completing multiple faces with fewer setups while maintaining standard tolerances of ±0.001".

✓ Precision Turning for Rollers, Shafts & Bushings: CNC turning supports components up to 26" in diameter and 160" long, with standard tolerances of ±0.0005" for rollers, shafts, pins, bushings, and other rotating components.

✓ Grinding & In-House Material Preparation: Blanchard grinding supports plates up to 15" in diameter and helps establish consistent sizing and flatness. In-house saw cutting reduces outside processing and allows material to move into machining sooner.

CNC Machining for Ag & Construction Equipment

Large-format vertical and bridge milling handles frame plates and structural components in one setup instead of three. Horizontal machining centers take multi-sided parts with the feature relationships intact. Heavy turning covers shafts, pins, and rollers out to 26 inches in diameter and 160 inches long.

Weldment machining is a core part of this work. Welding runs through qualified partner shops, and the post-weld machining happens here, restoring flatness and bore alignment after the heat has done what heat does. Blanchard grinding brings plates back flat. Reverse engineering, including 3D scanning, turns a worn sample into a print and a print back into a part.

Component	Process	Material	Critical feature
Large frame plate	Bridge mill	A36 / 4140	Flatness across a 60 inch span
Pivot pin, heavy service	Turn, grind	4340	OD ±0.0005", wear surface finish
Machined weldment, boom section	Partner weld, then mill	Structural steel	Bore alignment across the assembly
Gearbox housing, legacy	Mill, bore	Cast iron	Bore position taken from a scanned sample
Bushing set, volume	Turn, bar-fed	1045	ID to OD concentricity, run to run
Wear plate	Mill, Blanchard grind	AR400 / AR500	Thickness and flatness after grinding

What ag and construction equipment parts does Steelcrest Precision machine?

Frame plates, brackets, boom components, machined weldments, pins, bushings, shafts, wear plates, and gearbox components, in single pieces, repair quantities, or recurring production releases.

How large a component can Steelcrest machine?

Milling to 80 by 50 inches on a Johnford bridge mill and to 120 by 20 inches for long parts on a Haas VF-10, turning to 26 inches in diameter and 160 inches long, and horizontal machining to 64 by 50 by 32 inches.

Can Steelcrest recreate a part from an old drawing or a worn sample?

Yes. Steelcrest works from legacy prints regularly and offers reverse engineering with FaroArm 3D scanning to recreate components when the drawing or CAD model no longer exists.

Does Steelcrest machine weldments?

Yes. Welding is performed by qualified partner shops, and Steelcrest machines the finished weldments in-house to restore flatness, bore alignment, and critical dimensions after welding.

Does Steelcrest handle low-volume and single-piece equipment orders?

Yes. Single-piece replacements, repair quantities, and seasonal low-volume work run alongside scheduled production releases, which is the mix this industry actually buys.

What materials does Steelcrest Precision machine?

Carbon and alloy steels, stainless steels, tool steels, aluminum, copper, brass and bronze, and engineering plastics. Common equipment grades include 1018, 1045, 4140, 4340, AR400, and AR500.

How fast does Steelcrest respond to a quote request?

Quotes come back within 48 hours. Send a drawing or 3D model, material specification, tolerances, quantities, and your requested delivery date, along with any inspection or documentation requirements.

Agricultural & Construction

Frame plates, weldments, shafts, pins, and gearbox components machined at the scale heavy equipment actually runs at, from one emergency replacement to scheduled production releases.

A Machining Partner Sized for Heavy Equipment

What Is Ag & Construction Equipment CNC Machining?

The People Behind the Parts

Precision Behind Every Building Product.

Materials We Machine for Ag & Construction Equipment