Construction Machinery Casting —Gearboxes, Housings & Heavy Components
3DPTEK delivers precision castings for construction machinery using 3D printed sand molds and wax-pattern investment casting. Gearbox housings with complex internal cavities, reducer housings, machine frames, copper sleeves, helical gears. 5-day prototypes, zero tooling. ISO 9001 certified, 10 manufacturing centers.
Why Manufacturers Choose 3DPTEK for Machinery Component Casting
Two complementary processes —3D printed sand molds for large iron/steel components, and 3D printed wax patterns for precision investment casting. Eliminate tooling, compress lead times.
10 Manufacturing Centers
4,000+ tons cast iron, 10,000+ tons aluminum, 3,000+ tons steel per year. Full in-house production control.
45+ Industrial 3D Printers
25+ 3DP sand printers (J1800 to J4000), 20+ SLS (LaserCore-5300/6000). 24/7 parallel production capacity.
Zero Tooling, 5-Day Delivery
Print molds directly from CAD. No patterns, no core boxes. First casting in 5 days. Iterate designs at near-zero cost.
Full Machining In-House
5-axis gantry (3x4m), V8 vertical centers, CNC turning, wire-cutting EDM. Raw casting to finished component —one supplier.
Construction Machinery Components —Complex Geometry, Single-Piece Cast
Every component benefits from 3D printed tooling —sand molds for large iron/steel castings, wax patterns for high-precision steel investment casting. Integrated cores, optimized wall thickness, zero assembly welds.
Gearboxes & Transmission Housings —Complex Cavity, One Pour
Gearbox housings with intricate internal ribbing, bearing seats, and oil channels cast as a single piece. Aluminum and cast iron. 3DP sand printing achieves CT7 accuracy on all mating surfaces. Small-batch and multi-variety rapid trial production —no tooling investment.
Reducer Housings
Single and multi-stage reducer housings in cast iron. 3DP sand casting process delivers consistent wall thickness, flat mounting surfaces, and precise bearing bores. Suitable for worm, helical, and planetary reducers.
Machine Frames & Bases
Large structural frames and machine bases in cast iron or steel. 3DP enables integrated mounting pads, cable channels, and coolant trays without welding. Up to 4,000mm in a single pour with J4000 printer.
Copper Sleeves & Bushings
Centrifugal casting process for copper alloy sleeves and bushings. Excellent wear resistance and thermal conductivity. Tin bronze (C90300), aluminum bronze, and brass grades. Up to 1 ton pour weight.
Gears & Transmission Parts
Helical gears, spur gears, and transmission components in 20CrMnTi and alloy steels. Open forging for trials, die forging for production. Precision machining included. Case-hardened options available.
Custom Machinery Components
Bearing housings, pump bodies, hydraulic manifolds, motor end bells, and custom OEM replacement parts. Send your drawing —we handle mold flow simulation and gating design before the first pour.
Traditional Pattern Casting vs. 3DPTEK Digital Mold & Pattern Casting
Why machinery manufacturers are switching from physical patterns to digital sand molds and wax patterns.
Traditional Pattern-Based Casting
- Pattern tooling: $5,000-$50,000 per set
- 4-8 weeks for new tooling fabrication
- MOQ required to amortize tooling
- Design change = new tooling cost
- Separate core boxes for internal features
- Draft angles constrain geometry
- Welding and assembly for complex parts
- Pattern storage and maintenance
- Pattern wear degrades accuracy over time
3DPTEK Digital Mold & Wax Pattern Casting
- Zero tooling —print directly from CAD
- 3-5 days to first casting
- Single piece to batch —no minimums
- Iterate designs at near-zero cost
- Complex cores printed as one piece
- No draft angle restrictions
- Single-piece casting reduces assembly
- No pattern storage —print on demand
- Every mold identical —zero drift
The Machines Behind Your Construction Machinery Castings
45+ industrial 3D printers across three technologies: 3DP Binder Jetting (sand molds), SLS (sand cores + wax patterns), and SLM (metal). No outsourcing, no bottlenecks.
3DPTEK-J4000
3,800 x 1,850 x 1,000mm. 16 nozzles, 130-360 L/h. Largest machinery castings in a single mold.
Up to 4m Parts
3DPTEK-J2500
2,500 x 1,500 x 1,000mm. 12 nozzles. Award-winning workhorse for reducer housings and gearboxes.
Award-Winning
LaserCore-5300/6000
20+ SLS units. 4-6 MPa sand cores. 700mm to 1,050mm build. Complex internal channels for hydraulic components.
4-6 MPa CoresCase Studies —Construction Machinery Components
Real projects delivered to machinery manufacturers worldwide.
Cast Iron Reducer Housing —Batch Production
Industrial Gearbox ManufacturerTraditional pattern-based casting required 6-week tooling lead time and $8,000+ per pattern set. 3DPTEK delivered the first casting in 5 days with zero tooling investment. Batch production maintained CT7 accuracy with zero pattern wear.
Aluminum Gearbox —Complex Cavity, Single Piece
Machinery OEM, AsiaComplex internal ribbing and oil channels cast as a single piece. Eliminated 4 separate machining setups and 2 welding operations. Customer validated 3 design iterations in 3 weeks —previously impossible with conventional tooling.
Copper Alloy Sleeve —Centrifugal Casting
Heavy Equipment ManufacturerCentrifugal casting process ensures dense, porosity-free copper sleeves with uniform grain structure. Ideal for high-wear bushing and bearing applications in heavy machinery. Up to 1 ton pour weight.
20CrMnTi Helical Gear —Forged & Machined
Transmission Systems SupplierOpen forging for rapid design validation, transitioning to die forging for production volumes. Case-hardened after machining for optimal surface hardness and core toughness. Full dimensional inspection included.
5 Alloy Families for Construction Machinery
Full material traceability on every order.
Cast Iron
HT200, HT250, HT300, QT. 4,000+ tons/year.
Aluminum
A356, A357, AlSi10Mg. 10,000+ tons/year.
Cast Steel
ZG, alloy steels. Shell casting. 3,000+ tons/year.
Copper Alloys
Tin bronze, brass, Al-bronze. 1,000+ tons/year.
Forged Steel
20CrMnTi, 42CrMo. Open & die forging.
Certifications & Inspection You Can Rely On
Every casting ships with full documentation. In-house CMM, X-ray, spectrometer.
ISO 9001:2015
Certified quality management from order intake to final inspection.
ISO 45001:2018
Occupational health & safety across all 10 foundry locations.
ISO 14001:2015
Environmental management. Sustainable foundry operations.
EN 10204 3.1
Full material certification —chemistry, mechanicals, NDT.
From Your CAD to Your Machinery Component —4 Steps
Digital workflow eliminates tooling and compresses weeks into days.
Send Your Design
Upload 3D CAD (STP, IGS, STL). We run mold flow simulation and gating optimization before cutting material.
We Print the Mold
Sand mold printed in 6-24 hours. No patterns, no core boxes. Photos sent for your approval.
Pour & Cast
Your alloy poured under strict process control. Real-time thermal monitoring. Heat treatment as needed.
Inspect & Ship
CMM, X-ray NDT, spectrometer. Full report + material certs. Raw, semi-finished, or fully machined.
Construction Machinery Casting FAQ
We use two primary processes: 3D Printed Sand Mold Casting for large iron/steel components (gearbox housings, reducer housings, machine frames up to 4 meters), and 3D Printed Wax Pattern Investment Casting (lost wax) for high-precision steel and alloy components requiring superior surface finish and tighter tolerances. We also offer centrifugal casting for copper sleeves and forging for gear blanks. All tooling is 3D printed —zero patterns required.
Most machinery component prototypes ship in 5-7 days from CAD approval. This includes mold flow simulation, sand mold 3D printing, pouring, cleaning, and dimensional inspection. Parts requiring extensive CNC machining may add 2-3 days. Batch production delivers in 10-20 days depending on volume.
Yes. We offer three service levels: raw casting (cleaned), semi-finished (critical surfaces machined), and fully finished ready for assembly. Our in-house machining includes 5-axis gantry (3x4m), V8 vertical centers, CNC turning (up to 450mm), wire-cutting EDM, and surface grinding. Choose the level that fits your supply chain.
One piece. Because we 3D print sand molds directly from CAD, there is zero tooling cost to amortize. Order a single prototype to validate your design, then scale to batch production when ready. Per-unit cost decreases with volume, but we never require a minimum order.