ISO
60+
30+
10K+
3ERP is an ISO 9001:2015 certified manufacturer providing high-quality CNC machining services for custom parts. Our in-house capabilities include 3-, 4-, and 5-axis CNC milling, as well as CNC turning, routing, EDM machining, drilling, and precision grinding. These processes are all capable of achieving tolerances down to ±0.01 mm under optimal conditions.
Our machine shops can make any custom design. We specialize in rapid machining, prototype CNC machining, and both high- and low-volume manufacturing for engineers, product developers, and OEMs across various industries. Additionally, we provide a wide variety of surface finishes, including anodizing, powder coating, electroplating, and more, to enhance durability and aesthetic appeal for machined parts.
Whether you are a startup, an SME, or an OEM, 3ERP is your trusted partner for outsourcing CNC services. With experienced engineers and strict quality control, we ensure CNC parts meet your specifications. Submit your CAD files and drawings to receive a prompt quote.
We are always ready to handle complex CNC-machined parts with demanding specifications. Our advanced manufacturing capabilities support projects from initial prototypes through full-scale production with consistent quality and reliability.
Equipped with 3 Hexagon CMMs, 2 profile projectors, 2 Mitutoyo height gauges, and other precision inspection tools, our QA team ensures reliable quality control for every machined component. Our measurement capabilities include dimensional inspection down to 0.005 mm accuracy, surface roughness verification, hardness testing, and FAI reporting for demanding applications.
Learn more about Quality Assurance at 3ERP.
Whether you need rapid CNC prototypes, small-batch production, or end-use parts, 3ERP provides flexible machining solutions that adapt to your project needs.
Here are some of the CNC machining projects that we have done for our customers. And the happiness they would like to share when they receive the parts.
The uprights feature complex geometries with deep pockets and thin-walled sections. The key challenge was maintaining tight bearing bore tolerances (±0.01 mm) while preventing vibration and deformation during machining.
3ERP applied single-setup 5-axis CNC machining to complete all critical features in one clamping, eliminating re-fixturing errors.
Drilling, boring, and rigid tapping ensured accurate hole geometry and reliable threads, while in-process and final inspections verified all tolerances.
Lehigh Racing would like to express our sincere appreciation to 3ERP for their valuable support in helping make our race vehicle a reality.
The wheel hubs required extreme concentricity, thin-wall strength, and deep internal machining, all under a tight motorsports schedule.
3ERP used CNC turning, custom 5-axis fixtures, and dynamic milling strategies to achieve ±0.01 mm machining accuracy, lightweight structures, and race-ready reliability.
Tolerance of the deep cavity is +/-0.02mm, in the meantime, the roughness must be Ra0.1. The small channels are multiple directions, tight tolerance to ensure the rate of flow.
Use 5 axis milling machine to minimize the machining step. Special drilling tool for the 0.5mm holes. Reamer to achieve high gloss inner surface.
The geometry of this model is complex. Some of the joint lines are almost flat.
Our customer had this model made by 3D printing which is not as good as expected.
Use a 5-axis CNC milling machine to mill the diamond surface as finely as possible. So we can avoid sanding and polishing it directly after machining.
Explore our CNC parts gallery showcasing real customer projects and engineering samples.
3ERP machines over 30 engineering-grade metals and plastics to meet diverse industrial needs. Our capabilities include high-performance alloys like Aluminum 6061-T6 and 7075-T6, Stainless Steel 304 and 316L, and Titanium Ti-6Al-4V. For plastics, we work with PEEK, POM (Delrin), Nylon, and more. Each material is sourced with full traceability, and certifications are available upon request.
Additional finishes such as Brushing, Electropolishing, Black Oxide, and Zinc Plating are also available. Explore more options on our Surface Finishing Services.
Read our practical guide to optimize production efficiency. 3ERP experts offer immediate feedback to ensure optimal results in CNC machining, helping you consistently achieve precision tolerances. Following these best practices not only enhances precision and shortens lead time but also helps control your CNC machining service cost by reducing unnecessary complexity and rework.
With high-quality CNC machines, we can achieve high-precision tolerances and standards of +/- 0.02mm and can even get within +/- 0.01mm. But keep in mind that it can have an impact on the cost.
CNC machining costs depend on part complexity, tolerances, materials, finishes, and quantity. To reduce costs, 3ERP engineers review designs during quoting and recommend practical DFM improvements, such as relaxing non-critical tolerances, increasing corner radii, and simplifying features to reduce setups and machining time. We also provide quotes for different quantities to support both prototype and production needs.
Yes. After receiving your RFQ, our engineers review your CAD files and drawings to identify potential manufacturing challenges and provide DFM recommendations before production. We evaluate factors such as tolerances, part geometry, tool accessibility, machining setups, and material selection to improve manufacturability.
Simple parts can have lead times as short as 3 days. Most parts have a lead time of around 7 days, depending on part complexity and order requirements.
CNC (Computer Numerical Control) machining is a precise and efficient manufacturing process that uses automated cutting tools to shape metal or plastic parts. Depending on part complexity, we use 3-axis, 4-axis, or 5-axis milling machines, lathes, or routers.
Once we receive your 3D CAD model, our skilled machinists program optimized tool paths to reduce costs and ensure tight tolerances.
CNC machining is fast and cost-effective for simple parts, such as base plates with holes or grooves. It achieves tight tolerances of ±0.01 mm and delivers smooth surface finishes, making it suitable for painting or anodizing. It also accommodates a wide range of part sizes, from large components to small precision features produced on advanced 5-axis machines.
