013.30.630 Slewing Bearing Procurement Guide for Global Buyers

013.30.630 slewing bearing for excavators, cranes, or other heavy industrial equipment. Getting the specification correct and supplier selection right from the outset saves a lot of time and expense downstream. This guide from Heng Guan Bearing, a specialist slewing ring manufacturer based in Luoyang, the recognised centre for bearing production in China, takes global buyers step-by-step through what this bearing is, how to select the right configuration, which load factors are most important, and how to identify a reliable 013.30.630 supplier factory that consistently delivers quality. These ideas work equally well for you whether you are a procurement manager in Europe, an equipment distributor in North America, or a service center in Asia.

What Is the 013.30.630 Slewing Bearing and Why Is It Used in Industrial Applications?

The 013.30.630 slewing bearing is a single-row four-point contact ball slewing ring intended for applications involving continuous 360° rotation under combined axial, radial, and overturning moment stresses. The “013” in the bearing nomenclature is the series of the bearing, a common identifier for internal gear, single row four point contact ball slewing bearings, and is used by manufacturers across the globe. The “630” indicates the raceway center diameter in millimetres; hence, this unit fits within the medium-to-large industrial bearing category. Its most typical use is as the internal gear of the excavator slewing bearing – the rotating joint between the upper structure and undercarriage of hydraulic excavators – where it is required to endure cyclic shock loading, pollution, and continuous operation under field conditions.

The internal gear structure provides unique benefits for excavator and crane applications: The gear teeth are cut on the bore of the inner ring, so the exterior profile is clean, and external mounting is simplified. The internal mesh offers inherent contamination protection to the tooth engagement zone and results in reduced contact stress compared to comparable external gear systems. Heng Guan Bearing directly manufactures 83 involute gear teeth (module 6) on the inner ring with a tip circle diameter of 492 mm, and the tooth surfaces are induction hardened to 55–62 HRC.

How to Select the Right 013.30.630 Slewing Bearing for Your Equipment Requirements?

Selecting the correct 013.30.630 slewing bearing configuration depends on understanding your equipment's load case, gear engagement requirements, and environmental exposure. The internal gear version — the standard configuration for this model — engages with the drive pinion on the excavator swing motor or crane slew drive. Buyers should confirm the module (m = 6), number of teeth (Z = 83), and addendum modification coefficient (x = +0.5) on both the bearing gear and the drive pinion to ensure correct mesh and backlash. Heng Guan Bearing supplies this model in standard internal gear configurations with customizable tooth profiles for OEM replacement applications.

If the bearing replaces an original equipment unit, request the original part drawing or provide the failed bearing for dimensional reverse-engineering. For new equipment design, confirm the bolt circle diameters (outer 696 mm, inner 564 mm), number of mounting holes (24 + 24), and bolt specification (M16) to ensure the bearing seats correctly on both the upper structure and the undercarriage. Lubrication port placement and sealing design are equally important: most applications require grease lubrication of both the raceway and gear teeth through dedicated ports, and the double-sided nitrile rubber seal must match the ingress protection requirement of the operating environment.

Key Specifications and Load Factors to Check Before Buying a 013.30.630 Slewing Bearing

Before committing to a purchase, global buyers of the 013.30.630 slewing bearing should verify three primary load specifications against their equipment's actual demand: static axial load capacity, dynamic moment load capacity, and tilting moment capacity. The bearing's basic static axial load rating (C0a) of 1,870 kN verifies the static component of the combined load case. Heng Guan Bearing's engineering team provides load capacity tables for each production batch upon request, allowing procurement engineers to confirm that the supplied unit matches or exceeds OEM design requirements.

Raceway hardness is a critical quality indicator — the ball raceways should be induction-hardened to 55–62 HRC to resist spalling under repetitive loading, while the gear tooth surfaces receive the same hardening treatment for sustained mesh durability. The core material maintains a tempered hardness of 229–269 HB for shock absorption. Buyers sourcing from a new 013.30.630 supplier factory should request material mill certificates (EN 10204 3.1), gear tooth inspection reports, and hardness test records as part of the acceptance documentation package.

If you are currently evaluating suppliers for the 013.30.630 slewing bearing and need technical data, pricing, or a sample for qualification, Heng Guan Bearing's export team responds to all inquiries within 24 hours. Contact Us directly at mia@hgb-bearing.com with your equipment details and required quantity.

How to Evaluate a Reliable 013.30.630 Slewing Bearing Manufacturer and Supplier?

Choosing the right 013.30.630 supplier factory is as consequential as specifying the correct bearing. For global buyers, the key evaluation criteria span quality management, documentation capability, and logistics reliability. Heng Guan Bearing, located in Luoyang — China's designated slewing bearing manufacturing hub — holds ISO 9001:2015 certification and operates dedicated production lines for slewing rings from 50 mm to 10,000 mm in diameter. This production breadth ensures that the machining and quality infrastructure applied to the 013.30.630 unit is supported by a genuine industrial manufacturing base rather than a trading intermediary.

When evaluating any excavator slewing bearing internal gear supplier, ask specifically for batch test records rather than generic catalog specification sheets — legitimate manufacturers can provide dimensional inspection reports from coordinate measuring machines (CMM), ultrasonic flaw detection results, and material certificates tied to specific production lots. Each bearing should undergo 100% pre-shipment inspection covering raceway geometry, gear tooth profile, hardness verification, and rotational smoothness testing.

013.30.630 Slewing Bearing Applications, Quality Standards, and Global Purchasing Tips

The 013.30.630 slewing bearing is specified across a range of construction and industrial machinery applications globally. In excavators, it serves as the primary swing joint — one of the highest-load, highest-cycle components in the machine — where the internal gear engages the swing motor pinion to rotate the upper house relative to the tracks. In truck cranes and pick-and-carry cranes, equivalent medium-bore slewing rings manage the full operational load of the boom and counterweight system. Additional applications include concrete pump truck boom rotations, aerial work platforms, and material handling equipment where compact yet high-capacity rotation joints are required.

For global buyers purchasing this model as spare parts or for new builds, several practical considerations apply. Buyers in Europe should confirm CE documentation availability if the end-use application falls under the Machinery Directive scope. Buyers in North America should confirm ASTM-equivalent material certifications. Heng Guan Bearing exports regularly to Europe, North America, and Asia, and can support documentation requirements for most major market regulatory frameworks. For replacement applications on OEM equipment, providing the original part number or machine model enables faster cross-referencing and reduces specification error risk. Minimum order quantities for the 013.30.630 are flexible — single-unit samples are available for qualification, and volume pricing applies to orders of 10 units or more.

Conclusion

The 013.30.630 slewing bearing is a precision component where specification accuracy and supplier quality together determine service life. Heng Guan Bearing delivers certified, documented units for global buyers who need reliable supply and responsive technical support. Contact our team today to request drawings, pricing, or technical support for your project.

FAQ

Q: What are the main dimensions of the 013.30.630 slewing bearing?

A: The outer diameter is 732 mm, the inner diameter is 528 mm, and the total height is 80 mm. The raceway center diameter is 630 mm, which gives the model its "630" designation. The bearing weighs approximately 110 kg.

Q: What are the internal gear specifications for this excavator slewing bearing?

A: The internal gear uses module 6 with 83 involute teeth, an internal tip circle diameter of 492 mm, a gear tooth width of 60 mm, and an addendum modification coefficient of +0.5. Gear tooth surfaces are induction-hardened to 55–62 HRC for sustained mesh durability.

Q: What material is used in the 013.30.630 slewing bearing?

A: Standard production uses 50Mn forged alloy steel for the rings, with 42CrMo available for higher load or shock-resistance applications. Steel balls are made from GCr15 bearing steel. Material mill certificates (EN 10204 3.1) are provided with each delivery.

Q: How long does production and delivery take for a sample order?

A: Sample units from standard stock can ship within 7–15 business days. Custom-specification units with modified precision grades or tooth profiles require 4–6 weeks, depending on order complexity.

Q: Can Heng Guan Bearing supply test reports and material certifications?

A: Yes. Dimensional inspection reports from CMM, raceway and gear tooth hardness records, ultrasonic flaw detection results, and steel mill certificates are available for all production batches. ISO 9001:2015 certification is available as a company-level document upon request.

Get Your 013.30.630 Slewing Bearing Quote from Heng Guan Bearing

Ready to procure a dependable 013.30.630 slewing bearing from a certified 013.30.630 supplier factory? Heng Guan Bearing offers certified excavator slewing bearing internal gear specifications, custom precision grades, marine-grade coating options, and responsive engineering support with 20+ years of slewing bearing expertise. Contact us today at mia@hgb-bearing.com for drawings, pricing, and reliable long-term supply — our team responds within 24 hours.

References

1. ISO 281:2007, Rolling Bearings — Dynamic Load Ratings and Rating Life. International Organization for Standardization.

2. ISO 76:2006, Rolling Bearings — Static Load Ratings. International Organization for Standardization.

3. Harris, T. A., & Kotzalas, M. N. (2006). Rolling Bearing Analysis (5th ed.). CRC Press.

4. JB/T 2300-2011, Slewing Bearings. China Machinery Industry Federation.

5. Hamrock, B. J., Schmid, S. R., & Jacobson, B. O. (2004). Fundamentals of Machine Elements (2nd ed.). McGraw-Hill.

6. Brändlein, J., Eschmann, P., Hasbargen, L., & Weigand, K. (1999). Ball and Roller Bearings: Theory, Design and Application (3rd ed.). John Wiley & Sons.