PRODUCTS

Dongguan Tongtoo Aluminum Products Co., Ltd. specializes in aluminum alloy CNC precision machining, injection molding, mold development, and metal manufacturing. We are ISO 9001 certified and strictly implement the 6S management system. Using equipment imported from Germany, our products are exported to over 20 countries, including Europe, America, and Southeast Asia, with an average annual delivery volume exceeding 5 million units. With exquisite craftsmanship, rapid response, and end-to-end quality inspection at our core, we provide customized ODM/OEM solutions to our global customers, striving to become a trusted strategic partner in the international industrial manufacturing sector.

Product Introduction

We specialize in providing high-precision, high-strength, and high-durability CNC turning solutions for bearings and precision components for the global automotive industry. We utilize CNC turning centers imported from Japan and Germany, high-grade bearing steel materials (such as GCr15 and 100Cr6), and a comprehensive quality management system to ensure that every product meets or exceeds ISO 9001 standards. From prototype production to mass production, we are your trusted partner.

Product Description: Key Processing Technologies for Automotive Bearings. Automotive bearings are core components of the transmission system, and their precision, lifespan, and reliability are directly related to vehicle performance and safety. Our precision CNC turning services specialize in various rotating components, including bearing rings, flanges, gears, and camshafts. Leveraging computer numerical control (CNC) technology, we achieve micron-level tolerance control, extremely high dimensional consistency, and superior surface finish, ensuring smooth and silent operation under high-speed and high-load conditions.

Product Features and Applications

Our Technical Advantages and Process Features

Advanced Equipment: Equipped with multiple multi-axis CNC turning centers from Mazak (Japan) and DMG Mori (Germany). These machines support combined turning and milling, enabling complete machining of complex parts in a single setup, ensuring ultra-high coaxiality and positioning accuracy.

Material Expertise: We specialize in machining various high-carbon chromium bearing steels (such as SAE 52100 and SUJ2), case-hardened steels, stainless steels, and specialty alloys.

We have a deep understanding of the coordinated processes between material heat treatment (such as quenching and tempering) and turning to effectively control deformation and enhance product durability.

Strict Tolerance Control: Conventional turning tolerances can reach ±0.01mm, while finish turning processes consistently achieve ultra-high precision within ±0.005mm. Surface roughness can reach Ra 0.4μm or even lower, meeting low friction requirements.

Full-Process Quality Inspection: Equipped with a full suite of testing equipment, including coordinate measuring machines (CMMs), optical projectors, roundness gauges, and surface roughness gauges. We perform 100% critical dimension inspection and provide comprehensive quality inspection reports (COC/CQA).

Experienced Expert Team: Our team of engineers with over ten years of experience provides technical consultation and solutions.

Customized Service: We offer a free surface treatment solution evaluation based on your workpiece shape, material, and end use.

Competitive Pricing: Scaled production and efficient management provide you with cost-effective mirror finishing services.

Applications

Hub bearing units (hub bearing units) and component turning

Gearbox bearings (gearbox bearings) and rings

Engine tensioner bearings (inner and outer races)

Air conditioning compressor bearings and components

Gears, ring gears, camshafts, drive shafts, and other precision turned parts

Product Qualification

Environmental Certifications:

RoHS (lead-free, cadmium-free, and other hazardous substances)

REACH (European Union Chemical Safety Directive)

Quality Management System:

ISO 9001:2016/ISO 9001:2015 (production process quality control)

Inspection Equipment: Zeiss 3D Scanner (0.8μm accuracy)

Delivery, Shipping, and Serving

A professional ODM & OEM manufacturer with over 20 years of precision machining experience, we provide comprehensive, customized services tailored to customer needs. Standard Packaging: Copy paper + carton

Custom Packaging: Blister tray/PEF + wooden box

Global Export Experience: We are familiar with international packaging and shipping standards and consistently supply products to global markets including Europe, America, Japan, and South Korea.

FAQ

Q1: What materials do you commonly use for automotive bearing processing?

A: We most commonly process high-carbon chromium bearing steel (such as GCr15/100Cr6/SUJ2) due to its high hardness, high wear resistance, and excellent fatigue life. We also process case-hardened steel (such as 8620), stainless steel (440C), and engineering plastics (PEEK, Vespel) according to customer drawings.

Q2: How long does it take from receiving your documents to receiving a quote?

A: For most inquiries, we provide a quick quote within 24 hours. For particularly complex parts, we may require additional time for process review, but we will communicate this promptly.

Q3: What is your minimum order quantity (MOQ)?

A: We do not have a strict MOQ limit. We support both single-piece prototypes and small-batch trial runs, as well as large-volume production orders. For small-batch orders, pricing is primarily based on machining time and material costs.

Q4: What is the highest machining accuracy you can achieve?

A: This depends on part size and structural complexity. For standard bearing ring turning, we consistently guarantee IT6-IT7 accuracy, with diameter tolerances within ±0.005mm. Finish turning results in a surface finish of Ra 0.4μm.

Q5: Do you offer heat treatment and surface treatment services?

A: Yes, we offer one-stop machining solutions. We partner with leading local heat treatment facilities and can arrange processes such as quenching, tempering, and carburizing. We also offer a variety of surface treatments, including blackening, phosphating, galvanizing, and nickel plating, to enhance corrosion resistance.

Q6: What is the process from inquiry to delivery? Do I need to provide a drawing?

A: Yes. Please provide detailed 2D/3D drawings (e.g., DXF, STEP, IGES formats) and technical specifications. Our standard process is: drawing receipt → process review and quotation → order confirmation → first article production and inspection report submission → customer approval → mass production → strict quality inspection → packaging and delivery. We support various international trade terms, including DDP and DAP.

Company Introduction

Our 5,000 square meter workshop is equipped with hundreds of CNC machining centers (with machining accuracy up to 0.002 mm), CNC turning and milling machines, CNC lathes, milling machines, lathes, grinders, and more; as well as over a dozen inspection equipment (with inspection accuracy up to 0.001 mm). Our machining capabilities reach internationally advanced levels. The Tengtu team possesses the most professional expertise in mold design and CNC machining. We will work closely with you throughout prototyping, production, assembly, inspection, packaging, and final delivery to exceed your expectations.

Our team uses CNC machining to manufacture high-performance parts for industries such as aerospace, automotive, military, medical, machinery, electronics, and communications. We are committed to innovation, manufacturing and assembling critical components with exceptional precision, tight tolerances, and premium materials. Over the past 11 years, Tengtu has established a strong reputation for efficiency, quality, reliability, and on-time delivery.