Customized Industrial Heavy-Duty Gear Part Hardened Tooth Surface Helical Type

• Customization: Available
• Application: Motor, Machinery, Industrial Transmission, Mining, Servo Motor
• Hardness: Hardened Tooth Surface
• Model NO.: Helical Gear
• Gear Position: Internal Gear
• Manufacturing Method: Rolling Gear
• Toothed Portion Shape: Double Helical Gear
• Material: Cast Steel
• Type: Circular Gear
• Customizable: Yes
• Design Source: Factory/Clients
• Spot Goods: Non
• Installation: Assisted Installation
• Transport Package: Packed in Wooden Cases
• Specification: ISO
• Trademark: XINKAI
• Origin: China
• HS Code: 84834090
• Production Capacity: 5000/Year

Product Description

Large-Duty Segmented Double-Helical Bull / Girth Gear

Engineered for ultra-low-speed, high-torque, continuous-duty applications such as mine ball mills, cement rotary kilns, and metallurgical rolling stands. Single-piece weight 1–25 t, maximum pitch diameter up to 12 m. Available as one-piece or multi-segment rings for on-site, no-stress-relief bolted assembly.

Specification

Applications

For industrial heavy-duty gearbox
 
Key Configurations
• Module: m 20–60
• Number of teeth: 120–720
• Helix angle: 15°–30° (double-helical, zero axial thrust)
• Accuracy grade: ISO 1328-1 Grade 6–8 (grindable to Grade 5 on request)
• Heat treatment:
– Tooth surface induction hardened & tempered HRC 50–55
– Core toughness HB 220–260
• Materials:
– Standard: ZG35CrMo / ZG42CrMo cast steel
– Extreme duty: 18CrNiMo7-6 forged steel or ASTM 4140/4340 quenched & tempered forgings
• Inspection: 100 % UT/MT non-destructive testing, CMM tooth-profile inspection, magnetic-particle test report shipped with every gear

Structural Features

1. Split-flange joint with dowel pins + high-tensile bolts; field assembly in < 4 h without post-weld stress relief.
2. Double-helical teeth ensure smooth engagement, noise ≤ 82 dB(A), service factor ≥ 2.5 per AGMA 2001-D04.
3. Pre-machined laser-alignment bores guarantee on-site concentricity ≤ 0.15 mm.
4. Surface protection: epoxy zinc-rich primer + polyurethane topcoat, 720 h salt-spray resistance for outdoor dusty environments.

Technical Specifications

(Custom configurations available upon request.)

Why Choose us?

"Install once, run maintenance-free for a decade" — forged in a 10,000-ton press, finished on 5-axis gantry grinders, these industrial giants stay quiet and reliable in 24×365 dusty, high-load environments.

After Sales Service

Standard Warranty: 12 months or 2,000 operating hours (whichever comes first).
Extended Warranty: Optional coverage up to 24 months.
Global Support: 24/7 technical assistance and spare parts supply.
Training: On-site or remote operation/maintenance training.

Company Profile

Shanxi Pingyao Reducer Co., LTD.

Shanxi Pingyao Reducer Co., LTD. (Shanxi Pingyao Reducer Factory) was established in 1958, specializing in R & D, manufacturing, sales of all kinds of reducer, electric roller. The company has obtained IS09001 quality system certification, IS014001 environmental system certification, OHSAS18001 occupational health and safety system certification, American Association product certification, national mining products coal mine safety mark certification. It is an excellent enterprise in China and a meritorious enterprise in Shanxi Province, and its "Xinkai" trademark has won the title of China Famous trademark.

Company Overview and Product Introduction

Market Applications and Corporate Philosophy

Our company has perfect quality control, product development, technological innovation system, strict testing system and product after-sales service organization. In recent years, we have continuously increased investment in scientific research and optimized the conditions and means of scientific research. The main products are double-arc herringbone gear reducer, ZDY, ZLY, ZSY hard tooth surface cylindrical gear reducer, DBY, DCY hard tooth surface conical cylindrical gear reducer, cycloidal pin wheel reducer, NGW planetary gear reducer, JS mining high-power reducer and other 20 series, more than 3,000 kinds of specifications of reducers and electric rollers.

All kinds of reducers produced by our company are widely used in major petroleum, metallurgy, chemical, building materials, lifting, transportation, shipping, mining and other enterprises' products supporting use, the market is all over the country, exported to Europe, America and Southeast Asia and other countries and regions.

Our company has formed a "Consolidate employees' wisdom, pursue customers' satisfaction " as the business philosophy, to "create China's first-class products, create the world famous brand" as the vision, to "respect, tolerance, integrity, rigorous" as the core values of the Xinkai corporate culture.

Why Choose Us?

Other Products

OEM/ODM capabilities
Competitive pricing & bulk discounts
Fast shipping & customs clearance support
Turnkey project solutions

FAQ

Q: What's the lead time for orders?
A: Standard sea models ship in 30-40 days.

Q: Do you provide after-sales service overseas?
A: Yes, we have partnered service centers in key regions.

Q: Can I request a customized bucket size?
A: Absolutely! We offer tailored attachments.

Q: What documents do you provide for export?
A: Full export package (Commercial Invoice, Packing List, Bill of Lading, COC, etc.).

Q: How do I place an order?
A: Contact us via email/phone for a quote, then confirm with a PO.