013.30.630 slewing bearing

013.30.630 Slewing Bearing - Internal Gear Single Row Four Point Contact Ball Type

Luoyang Heng Guan Bearing Technology brings you the 013.30.630 Slewing Bearing, a precision-engineered internal gear rotary support solution with 732mm outer diameter, 528mm inner diameter, and a compact 80mm height profile. This single-row four point contact ball bearing features module 6 internal teeth (83 teeth total) machined directly onto the inner ring, delivering clean integration for excavators, concrete pump trucks, and cranes. With over 30 years of manufacturing expertise from our Luoyang facility—China's bearing industry hub—we've exported this robust product to 50+ countries. Our ISO9001-certified production utilizes 50Mn/42CrMo forged steel with raceway hardness 55-62 HRC, achieving 1,870 KN load capacity at just 110kg weight. CAD drawings and technical datasheets available for your engineering team.

Technical Specifications

Product Features & Design Advantages

① Structural Excellence

The four point contact ball design enables your equipment to handle axial, radial, and tilting moment forces simultaneously. This compact 80mm cross-section saves precious installation space in tight excavator housings.

② Internal Gear Drive - Core Differentiation ★

This is where the 013 series truly shines:

· Clean Integration: Gears machined on the inner ring's bore create a streamlined outer profile

· Robust Tooth Design: Module 6, 83-tooth involute spur gear with induction-hardened surfaces (55-62 HRC)

· Built-In Protection: No external gear guards needed—the meshing zone naturally resists dust ingress

· Lower Contact Stress: Internal meshing produces less wear than external gear configurations

· Space-Efficient Drive: Small pinion drives the inner ring from inside, perfect for compact rotating platforms

③ Materials & Heat Treatment

Inner and outer rings use 50Mn/42CrMo forged steel with medium-frequency induction hardening on raceways. Gear tooth surfaces are separately hardened to 55-62 HRC for extended meshing life. Quenched and tempered core hardness reaches 229-269HB, balancing strength with toughness.

④ Quality Control Standards

Manufactured per JB/T 2300-2011 standards under ISO 9001:2015 certification. Every bearing undergoes 100% ultrasonic and magnetic particle inspection before shipment. Full dimensional verification ensures compliance with your specifications.

Applications

A) ★ Excavator Application (Primary Use Case)

The excavator slewing bearing 013.30.630 serves as the standard swing bearing solution for excavator platforms. Hydraulic swing motors drive a planetary gearbox outputting to a small pinion that meshes with these internal teeth, enabling 360° rotation of the upper structure. The internal gear design keeps the turntable's outer perimeter clean and provides superior dust resistance—essential for mining and earthmoving environments where dust and debris are constant challenges.

B) Concrete Pump Truck

Boom rotation mechanisms in concrete pump trucks benefit from the compact drive interface provided by this internal gear configuration. The clean mounting surface simplifies maintenance access.

C) Crane & Drilling Rig

Drilling rig rotary tables, material handlers, and grab rotation assemblies requiring compact drive systems rely on the 013.30.630 slewing bearing's space-efficient design.

D) Timber Grab / Material Handler

Wood handling equipment and scrap material handlers use this bearing where dust protection and compact installation are priorities.

Gear Type Comparison (013 vs 011 vs 014 vs 010)

→ Selection Guide:

· Internal gear type → Compact outer profile + high dust protection → Excavators/pump trucks

· External gear type → Easy external drive maintenance → Tower cranes/mobile cranes

· No gear type → Hydraulic direct drive or driven end → Non-powered rotation

OEM & Custom Manufacturing

Heng Guan Bearing specializes in OEM replacement and non-standard customization. Our 50+ engineer team provides:

· Reverse Engineering Service: On-site measurement for worn bearings without original drawings

· Load Optimization: Custom design based on your actual working conditions

· Material Upgrades: Special alloy steels for corrosive or extreme temperature environments

· Precision Grades: P6/P5/P4 available for high-accuracy applications

· Fast Delivery: Standard models in stock; custom orders within agreed timelines

Our CNC vertical lathes, gear shapers, and induction hardening machines handle diameters from 50mm to 10,000mm. We support complete technical consultation from selection through installation guidance.

FAQ

Q1: What type of gear does 013.30.630 have?

A: It features an internal gear machined on the inner ring bore, allowing the pinion to drive from inside the bearing.

Q2: What is the module and number of teeth of the internal gear in 013.30.630?

A: Module 6 with 83 teeth, providing robust power transmission for construction excavator.

Q3: What is the root diameter of 013.30.630 internal gear?

A: The root diameter (di) measures approximately 492mm, critical for pinion matching calculations.

Q4: What is the difference between 013.30.630 (internal gear) and 011.30.630 (external gear)?

A: The 013 has teeth on the inner ring bore (compact exterior), while 011 has teeth on the outer ring perimeter (larger envelope but easier external drive access).

Q5: Is 013.30.630 suitable for excavators?

A: Absolutely. This is the standard choice for excavator swing bearings, offering excellent dust protection and compact integration with hydraulic swing motors.

Q6: What pinion gear matches the 013.30.630 internal gear?

A: You'll need a module 6 spur pinion. Our engineers can calculate the optimal tooth count and design the pinion based on your motor specifications.

Q7: Can I get CAD drawings with internal gear profile?

A: Yes. We provide 2D technical drawings and 3D CAD models upon request to facilitate your equipment design integration.

Contact Us

Ready to solve your excavator or construction equipment rotation challenges? Our engineering team at Luoyang Heng Guan Bearing Technology is here to help you select the right bearing configuration, verify mounting dimensions, and provide technical support throughout your project.

Get your customized solution today:

Email: mia@hgb-bearing.com

We'll respond within 24 hours with technical guidance, pricing, and delivery timelines. Whether you need the standard 013.30.630 slewing bearing or a customized solution for special working conditions, our three decades of expertise ensure you receive reliable, durable components backed by comprehensive after-sales support.