013.30.630 Slewing Bearing: A Practical Buyer’s Guide

Selecting the appropriate 013.30.630 slewing bearing for your crane, excavator, or turntable is more than just looking up a product number in a catalog. This 630 mm raceway variant is a single-row, four-point-contact ball slewing ring, manufactured to the JB/T 2300-2011 standard, with an internal gear — module 6, 83 teeth — drilled into the inner ring bore, which allows the pinion to drive from the interior of the bearing. That one design decision is why the 013.30.630 is the standard swing bearing on hydraulic excavators and concrete pump truck booms. The exterior envelope is kept clean, and the meshing zone is behind the seal where mud, rock dust, and splashed water cannot reach it. At Heng Guan Bearing, we advise customers through specification checks, dimension verification, and supplier assessment so the part installs right the first time, and as an experienced 013.30.630 supplier factory, we provide 2D drawings and 3D CAD models with every quote. This tutorial discusses what performance data really counts, how dimensions and gear design affect load capacity, how to check mounting fit, and how to choose a supplier you can trust.

What Specifications Define a 013.30.630 Slewing Bearing's Performance?

The load rating statistics are the basis for the performance of a 013.30.630 slewing bearing: axial load, radial load, and tilting moment capacity under actual working circumstances. The base rated load for this particular model is 1,870 kN, and as the four-point contact architecture allows one ball row to concurrently resist axial, radial, and moment loads, customers need to map their machines' combined loading against that single rating and not a catalog picture.

Buyers should also check restrictions on rotation speed, hardness of raceways (55–62 HRC after medium frequency induction hardening), and allowed clearance, which influence service life under continuous employment. Often this model is designed as an excavator slewing bearing internal gear type, which contacts the pinion with teeth cut on the inside ring and modifies housing design requirements, freeing the turntable perimeter for hose routing and guarding.

The other thing to think about is sealing, especially for dusty locations, so check with your 013.30.630 source manufacturer whether double-sided rubber seals are standard – they are on this model. Heng Guan Bearing specifies the parameters for every quote, allowing customers to compare apples with apples amongst providers.

013.30.630 Slewing Bearing Dimensions, Load Ratings, and Gear Design

Accurate dimensions are the foundation of a successful order. Buyers should confirm bore diameter, outer diameter, overall height, bolt hole PCD, and hole count, along with gear module, tooth count, and displacement coefficient for the 013.30.630 slewing bearing. On this 630 mm raceway series, the mounting pattern is tightly standardized — 732 mm outer diameter, 528 mm bore, 80 mm height, with 24 × φ18 holes on both the 696 mm and 564 mm bolt circles for M16 fasteners — which makes cross-sourcing from more than one vendor straightforward.

Since this series is typically built as an excavator slewing bearing internal gear, tooth clearance and gear hardness need attention, as undersized clearance causes premature wear while excess play increases backlash noise; the internal gear uses module 6 with 83 teeth, a 492 mm root diameter, 60 mm tooth width, and a +0.5 displacement coefficient. Load rating tables from a qualified 013.30.630 supplier factory should reflect static and dynamic capacity separately, so engineers can size the part correctly. Heng Guan Bearing generates individual load curves per order rather than reusing catalog values.

How Do You Verify Mounting Compatibility for a 013.30.630 Slewing Bearing?

Mounting compatibility is where many import orders go wrong if verification is skipped. Buyers should compare bolt hole spacing, mounting flatness, and center hole diameter against their housing drawing rather than assuming a match by part name alone. Sending photos of the old bearing and its markings helps a 013.30.630 supplier factory cross-check tooth profile, root diameter, and ring thickness before cutting steel — a useful check here, because the related 014.30.630 uses a wider module 8 gear with 62 teeth in the same 630 mm raceway envelope, so a gear mix-up is easy to miss on paper.

Without a full drawing, our engineers can reverse-measure key dimensions from photos and confirm fit before production, and we can issue a STEP/IGES model, so your CAD assembly can be checked before any material is committed. Email specifications to mia@hgb-bearing.com for a compatibility assessment, protecting you from receiving a 013.30.630 slewing bearing that fails to bolt up on site.

013.30.630 Slewing Bearing Material Selection and Quality Inspection

Material choice directly affects durability. Most 013.30.630 rings are forged from 50Mn or 42CrMo alloy steel, induction-hardened along the raceway to roughly 55–62 HRC while the quenched-and-tempered core stays in the 229–269 HB range — tough enough to resist cracking under shock loads while the contact surface resists wear. Gear teeth should also be hardened to resist wear from repeated pinion engagement, and on an excavator slewing bearing internal gear of this type, the tooth surfaces are separately hardened to the same 55–62 HRC band.

Quality inspection for a 013.30.630 slewing bearing should include material certification, hardness testing at multiple points, CMM dimensional checks, and rotation torque testing before packaging. Heng Guan Bearing performs ultrasonic flaw detection on every ring and issues an inspection report with each shipment. Requesting sample certificates before a deposit is common practice with any serious 013.30.630 supplier factory.

How Can Buyers Choose a Reliable 013.30.630 Slewing Bearing Supplier?

Selecting a trustworthy 013.30.630 supplier factory goes beyond comparing unit price. Buyers should ask about in-house forging and machining capability, minimum order quantity, typical lead time, and export documentation experience — Heng Guan Bearing machines rings from 50 mm to 10,000 mm diameter on in-house CNC vertical lathes and gear shapers, with induction hardening on the same site.

Standard models are held in stock, while custom orders are produced to agreed timelines, so it is worth confirming current availability for your delivery window before committing. Requesting audit photos, business licenses, and references from buyers in similar industries, such as port equipment or construction machinery, helps separate genuine manufacturers from trading intermediaries. For an excavator slewing bearing internal gear, one fast test of a supplier is to send a photo of the old unit's ID plate and ask for a dimensional cross-check against the 732 / 528 / 80 mm envelope and the module 6, 83-tooth gear data before any quotation is discussed.

Communication responsiveness during quoting is often a good early indicator of after-sales support. Heng Guan Bearing, based in Luoyang's bearing cluster and certified to ISO 9001, offers factory video tours so buyers can verify capability before a deposit. Comparing suppliers with one checklist leads to a more confident decision for a 013.30.630 slewing bearing purchase.

Conclusion

A well-specified 013.30.630 slewing bearing depends on accurate data, verified fit, and disciplined inspection. Heng Guan Bearing supports every step — with ISO 9001 certification and exports to more than 50 countries. The internal gear configuration makes this model the natural choice for hydraulic excavator swing platforms, concrete pump truck boom rotation, drilling rig rotary tables, grab assemblies, and timber handling equipment, where compact integration and dust protection matter more than external drive access. Reach out and let's start your project today.

FAQ

Q1: Is the 013.30.630 an internal or external gear design? 

A: It's typically an excavator slewing bearing internal gear type, with module 6 teeth cut into the inner ring bore.

Q2: What steel is used for the raceway? 

A: Usually forged 50Mn or 42CrMo steel, hardened to about 55–62 HRC over a 229–269 HB core.

Q3: How do I confirm the bearing will fit my machine? 

A: Send drawings or photos to mia@hgb-bearing.com for a free fit check.

Q4: What inspection documents come with each order?

 A: Material certificates, hardness reports, dimensional checks, and flaw-detection results.

Q5: Can seal type and mounting holes be customized?

 A: Yes, seal type, bolt patterns, gear parameters, precision grades (P6/P5/P4), and material upgrades can be adjusted to your equipment.

Q6: What pinion matches the internal gear of the 013.30.630? 

A: A module 6 spur pinion is required; our engineers can calculate the optimal tooth count and design the pinion from your motor specifications.

Request Your 013.30.630 Slewing Bearing Quote From Heng Guan Today

Have a drawing or old 013.30.630 slewing bearing to reference? Send it to mia@hgb-bearing.com, and our engineers will follow up within 24 hours with a tailored quotation and delivery timeline for your project.

References

1. Ministry of Industry and Information Technology of the People’s Republic of China. JB/T 2300-2011 — Slewing Bearings. Chinese Machinery Industry Standard, 2011.

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

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

4. American Society of Mechanical Engineers. ASME SRB-1:2018 (R2023) — Design, Installation, Maintenance, and Application of Ball Slewing Ring Bearings. New York: ASME, 2018, reaffirmed 2023.

5. Harris, T. A., and Kotzalas, M. N. Rolling Bearing Analysis: Essential Concepts of Bearing Technology. 5th ed. Boca Raton, FL: CRC Press, 2007.

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