How is the quality of the gears tested?

We use high-precision detection equipment including Rockwell hardness tester 500RA, Double mesh instrument HD-200B & 3102, and Gear measurement center instrument CNC3906T.

What is the order process for custom gears?

The process involves: 1. Customer sends drawing/sample (we provide CAD if only sample is given). 2. We provide processing technique and quotation. 3. Sample production and confirmation. 4. Order placement and 50% deposit. 5. Quantity production. 6. Balance payment after acceptance. 7. Delivery.

What is the lead time for production?

The average lead time is more than 12 months during peak season. Please contact us for specific timing based on your order quantity and customization requirements.

High-Precision Hardened Internal Ring Gears for Reducer Transmissions

Name: High-Precision Hardened Internal Ring Gears for Reducer Transmissions
Brand: Changzhou Zhihai Machinery Co., Ltd.
SKU: 844769965

Jiangsu, ChinaChangzhou Zhihai Machinery Co., Ltd.

US$8.00-100.00

10 Pieces

Product profile

Customization

Available

Application

Motor, Electric Cars, Motorcycle, Machinery, Marine, Toy, Agricultural Machinery, Car, Reducer

Hardness

Hardened Tooth Surface

Model NO.

Gear ring

Gear Position

Internal Gear

Manufacturing Method

Gear Shaping

Toothed Portion Shape

Involute

Material

45#Steel,20crmnti,40cr,20CrNiMo,20mncr5,Gcr15simn,

Type

Circular Gear

Module

0.8-6

Tooth Profile Machining

Gear Shaper

Surface Treatment

Bluing, Galvanized, Nickel Plating

Changes Way

Mixed

Transport Package

Export Standard Packing or Customized

Specification

Internal ring gear

Trademark

zhihai or customized

Origin

Changzhou, Jiangsu

HS Code

8483109

Production Capacity

100, 000PCS

Key features

Customizable Specifications: Module 0.8-6, gear shaping, and surface treatments like bluing or nickel plating are available.

Wide Material Selection: Available in 45#Steel, 20CrMnTi, 40Cr, Stainless Steel, Nylon, Bakelite, Copper, and Aluminium.

High Precision Testing: Verified with Rockwell hardness tester, Double mesh instrument, and CNC3906T gear measurement center.

ISO 9001 Certified: Manufacturing process certified under GB/T19001-2016/ISO9001:2015 standards.

Versatile Applications: Suitable for reducers in electric cars, medical equipment, construction machines, and forklifts.

Advanced Heat Treatment: Options include carburizing, quenching, nitriding, and high-frequency quenching based on material.

OEM/ODM Support: Custom manufacturing based on customer drawings or samples with CAD support provided.

Internal Gear Design: Involute tooth profile hardened tooth surface designed for high-precision reducer transmissions.

Company profile

High Repeat Buyers ChoiceYears of Export ExperienceExhibition Experience

Changzhou Zhihai Machinery Co., Ltd.

Jiangsu, China

Business Type: Manufacturer/Factory CertifiedR&D Capacity: ODM Service AvailableAverage Response Time: ≤0.07h

AI-Powered supplier vetting

SummaryChangzhou Zhihai Machinery Co., Ltd. is presented as a precision gear and mechanical transmission component manufacturer providing research and development, production, sales, and customization services. It holds an ISO 9001:2015 certificate, reports new product development during the past year, and offers ODM and multiple customization modes. Its stated product range includes gears, racks, reducers, gearboxes, rotary tables, spindles, and related measuring or production equipment. The supplier reports written procedures for finished-product inspection, corrective and preventive actions, and customer complaint handling. It has exported for 10 years, with exports representing 41%–50% of total sales, and accepts several delivery and payment terms. Evidence of production capability exists through its stated manufacturing activities, but detailed capacity, equipment, output, and quality-performance data are not provided. Financial credibility cannot be assessed because the slices only identify reporting years...

Supplier typeThe supplier is identified as a professional manufacturer engaged in the R&D, production, and sales of precision gears and mechanical transmission components. Its registered business scope also includes CNC machine tools, machine-tool parts, motor manufacturing, software, and various trading activities, indicating a manufacturing-led supplier with a broad business scope.

CertificationsThe supplier holds an ISO 9001:2015 certificate for supplier management systems. This is explicit evidence of a certified quality-management system, although no additional certifications are listed.

After-Sales capabilityThe supplier reports written procedures and followed records for customer complaint handling, corrective and preventive actions, and service-capability assessment. It also states a one-month average lead time in both peak and off-season periods and accepts CIF, FOB, CFR, and EXW terms, supporting structured service and delivery processes.

R&D capabilityThe supplier states that it is technology-driven, conducts R&D, and has introduced new products during the past year. It also provides ODM services and broad design customization, although it does not have an available SDK and no detailed R&D resources, patents, or development metrics are provided.

Production capacityThe supplier describes itself as a manufacturer of precision gears and transmission components and lists CNC machine-tool manufacturing, machine-part processing, metal treatment, and general equipment manufacturing in its business scope. It also reports written and consistently followed finished-product inspection instructions, but production capacity, equipment quantity, throughput, and defect performance are not stated.

Customization capabilityThe supplier explicitly offers customization from samples, customization from designs, full customization, minor customization, and flexible customization. It also states that customers can select and configure products according to technical requirements and engineering situations, providing strong evidence of customization capability.

Product Q&A

Q:What materials are available for the internal ring gears?

We offer a wide range of materials including 45#Steel, 20CrMnTi, 40Cr, 20CrNiMo, 20MnCr5, GCR15SiMn, 42CrMo, 2Cr13 stainless steel, Nylon, Bakelite, Copper, and Aluminium.

Q:Can the gears be customized?

Yes, customization is available. The module ranges from 0.8 to 6, and surface treatments like bluing, galvanized, or nickel plating can be selected. We also support OEM/ODM services based on customer drawings or samples.

Q:What is the manufacturing process for these gears?

The main manufacturing method is gear shaping. Depending on the material, heat treatment processes such as carburizing and quenching, high-frequency quenching, nitriding, or hardening and tempering are applied.

Q:What certifications does the product have?

The product is certified under GB/T19001-2016/ISO9001:2015 standards, ensuring high quality and reliability.

Q:What are the typical applications for these internal ring gears?

They are used in various gear reducers for applications including electric cars, motorcycles, marine equipment, agricultural machinery, printing machines, medical equipment, garden machines, construction machines, and forklifts.