RKS.161.14.0644 Slewing Bearings
It is a drop-in replacement for the SKF RKS.161.14.0644 and Rothe Erde 161 series crossed roller slewing bearings, and is dimensionally equivalent to INA XSA14 0644N. The crossed roller raceway simultaneously carries axial force, overturning moment and large radial loads with high stiffness, suitable for shield machines, iron and steel mill equipment, excavators and industrial automation.
- Product Description
RKS.161.14.0644 Slewing Bearing | High-Precision Crossed Roller Turntable Solution for Heavy-Duty Industrial Applications
Luoyang Heng Guan Bearing Technology specializes in manufacturing the RKS.161.14.0644 Slewing Bearings, a single-row crossed cylindrical roller turntable bearing with external gear. This 161 series bearing features a 644 mm mean raceway diameter, 574 mm bore, 742.8 mm outside diameter, and 56 mm height, weighing just 52 kg. With a static axial load capacity (C0) of 919 kN and dynamic rating (C) of 210 kN, it delivers exceptional stiffness for shield machines, excavators, and steel mill equipment.
Our ISO9001-certified facility produces slewing bearings from 50-10000mm diameter with precision grades P0/P6/P5/P4. Backed by over 30 years of expertise and advanced CNC equipment, we provide reliable bearing solutions exported to 50+ countries. Each RKS.161.14.0644 slewing ring undergoes induction hardening (HRC 55-62) and rigorous testing to ensure dimensional accuracy within ±0.2 mm radial and ±0.3 mm axial tolerances.
Technical Specifications of RKS.161.14.0644
Here's a complete parameter overview of the RKS 161 14 0644 bearing to help you verify dimensional compatibility:
Parameter | Value (Metric) | Value (Imperial) |
Mean Raceway Diameter (dm) | 644 mm | 25.35 in |
Outside Diameter (D) | 742.8 mm* | 29.24 in |
Centring Diameter Outer (D1) | 646 mm | 25.43 in |
Inside Diameter (d) | 574 mm | 22.60 in |
Centring Diameter Inner (d1) | 642 mm | 25.28 in |
Total Height (H) | 56 mm (±1 mm) | 2.20 in |
Weight | 52 kg | 114.6 lb |
Outer Ring Bolts | Ø685 mm / M12 / 32 pcs | Threaded |
Inner Ring Bolts | Ø598 mm / 14 mm / 36 pcs | Clearance holes |
Gear Pitch Circle (d0) | 732 mm | 28.82 in |
Module / Teeth (z) | m6 / 122T | Pressure angle 20° |
Addendum Modification (k·m) | −0.6 mm | — |
Permissible Tooth Force | 16 kN / 54 kN max | Normal / Peak |
Dynamic Load Rating (C) | 210 kN | 47,200 lbf |
Static Load Rating (C0) | 919 kN | 206,600 lbf |
Roller Diameter | 14 mm (100Cr6) | Through-hardened |
Ring Material | C45E / 42CrMo4 / 50Mn | Tempered steel |
Raceway Hardness | HRC 55-62 | Induction hardened |
Seals | NBR integral | −40 to +110 °C |
Lubrication | NLGI 2 Li-EP grease | 4 × M10×1 fittings |
Continuous Speed | ≤ 1.5 m/s | Brief: 2 m/s |
Running Accuracy | Radial ≤ 0.2 mm / Axial ≤ 0.3 mm | — |
Note: *The outside diameter includes the gear tooth tip circle per SKF standard. Some catalogs list 742.3 mm for the reference diameter.
Cross-Reference Interchange & Equivalent Models
Your RKS.161.14.0644 slewing bearing is a direct replacement for multiple international brands:
Original Brand | Part Number | Compatibility Notes |
SKF | RKS.161.14.0644 | Exact dimensional match |
INA | XSA14 0644N / XSA140644N | OD differs by 0.5 mm (742.3 mm vs 742.8 mm) |
INA | XSU14 0644 / XSI14 0644N | Equivalent crossed roller series |
Rothe Erde | 161 series external gear | Industry-standard 161 family |
Aftermarket | 574×742.8×56 slewing bearing | Generic dimension designation |
If you're searching for an XSA14 0644N equivalent or RKS.161.14.0644 replacement, our China-manufactured solution offers identical mounting interfaces, load ratings, and gear specifications at competitive factory-direct pricing. We also support KX080-3 RD809-19110 equivalent inquiries for mini excavator applications.
Why Choose Heng Guan's 161.14.0644 Crossed Roller Slewing Ring?
Precision Engineering for Maximum Stiffness
The crossed roller design arranges 14 mm cylindrical rollers perpendicular to each other in a single raceway. This configuration simultaneously supports axial loads (919 kN static capacity), radial forces, and tilting moments with minimal play. You'll experience superior rotational accuracy—radial runout ≤ 0.2 mm and axial runout ≤ 0.3 mm—critical for TBM cutterhead positioning and welding positioner operations.
Heavy-Duty External Gearing
The crossed cylindrical roller slewing ring m6 z122 features a module 6 external gear with 122 teeth and a 732 mm pitch circle. With permissible tooth forces rated at 16 kN continuous and 54 kN peak (normalized gear, 3 million cycles), you can confidently transmit drive torque in excavator swing drives and conveyor turntable systems. The pressure angle of 20° and addendum modification of −0.6 mm optimize tooth root strength.
Advanced Material & Heat Treatment
We manufacture rings from C45E, 42CrMo4, or 50Mn structural steel, then apply induction hardening to achieve HRC 55-62 surface hardness. The 100Cr6 rollers are through-hardened for exceptional wear resistance. This combination delivers long service life even under shock loading in iron and steel industry applications.
Sealed & Lubricated for Harsh Environments
Integral NBR seals provide protection from −40 to +110 °C, keeping contaminants out while retaining NLGI 2 lithium EP grease. Four M10×1 grease fittings allow scheduled re-lubrication without disassembly. For shield machine operations or material handling equipment exposed to dust, this sealing system extends maintenance intervals significantly.
Factory-Direct Availability
Unlike imported brands with long lead times, we maintain inventory of the 574×742.8×56 slewing bearing and similar medium-size crossed roller models. You'll benefit from fast delivery, competitive pricing, and flexible MOQ. Our engineers provide technical consultation, CAD drawings, and installation guidance to ensure seamless integration.
Industrial Applications of Medium-Size Crossed Roller Bearings
Shield Machines & TBM Equipment
The shield machine RKS.161.14.0644 Slewing Bearings supports auxiliary turntables and articulation joints in tunnel boring machines. Its compact 56 mm height fits tight spaces while the 919 kN static capacity handles thrust forces during earth pressure balance operations.
Excavators & Construction Excavator
As a mini excavator turntable bearing KX series equivalent, the 161.14.0644 serves in swing mechanisms for 8-10 ton machines. The external gear simplifies integration with hydraulic motors, while the crossed roller design minimizes boom sway during digging cycles.
Steel Mill & Heavy Industry
In continuous casting lines and ladle turrets, this iron and steel industry slewing ring bearing withstands extreme temperatures and vibration. The 42CrMo4 ring material maintains structural integrity under thermal cycling.
Welding & Positioning Systems
For welding positioner slewing bearing 0644 applications, the high rotational accuracy ensures consistent torch positioning. The low starting torque of crossed rollers reduces servo motor requirements.
Material Handling Automation
In conveyor junctions and automated storage systems, the material handling rotary table bearing external gear provides smooth, precise indexing. The 1.5 m/s continuous speed rating suits high-throughput operations.
Industrial Robots & Automation
The 742.8mm OD crossed roller slewing bearing serves in robotic arm joints and rotary indexing tables where space constraints demand compact, high-stiffness solutions.
Manufacturing Excellence & Quality Control
Our CNC vertical lathes, gear shapers, and machining centers ensure precise tolerances on every RKS.161 14mm crossed cylindrical roller slewing bearing. CNC quenching machines control hardness depth uniformly across the raceway. Coordinate measuring machines verify dimensional accuracy, while vibration testers confirm smooth rotation under load.
We follow ISO 9001 protocols and RoHS compliance for international markets. Each bearing undergoes full traceability—from raw material certificates (EN 10204 3.1) to final inspection reports. Our quality assurance team validates load ratings through FEA analysis and empirical testing.
With over 50 R&D and manufacturing specialists, we offer personalized non-standard customization services. If you need modified bolt patterns, special seal materials, or non-standard gear modules, our engineering team can Gear the 161 series crossed roller slewing bearing external gear to your exact requirements (3D drawings not required for reverse engineering).
FAQ
Q: What is RKS.161.14.0644?
A: RKS.161.14.0644 is a single-row crossed cylindrical roller slewing bearing with external gear, manufactured to SKF RKS.161 standards. It features a 644 mm mean raceway diameter, 574 mm bore, 742.8 mm outside diameter, 56 mm height, and weighs 52 kg.
Q: What are the dimensions of RKS.161.14.0644?
A: Bore 574 mm (22.60 in), outside diameter 742.8 mm (29.24 in), total height 56 mm, weight 52 kg (114.6 lb). The external gear has a 732 mm pitch circle, module 6, and 122 teeth.
Q: Is RKS.161.14.0644 equivalent to INA XSA14 0644N?
A: Yes. INA XSA14 0644N is dimensionally equivalent—the outside diameter differs by only 0.5 mm (742.8 vs 742.3 mm) with identical bore, height, and bolt patterns. You can use them interchangeably in most applications.
Q: What is the load capacity of RKS.161.14.0644?
A: Dynamic axial load rating C = 210 kN, static axial load rating C0 = 919 kN. Permissible tooth forces are 16 kN continuous and 54 kN maximum for the normalized external gear over 3 million cycles.
Q: What applications use RKS.161.14.0644?
A: Shield machines and TBM auxiliary turntables, iron and steel mill equipment, excavator swing platforms, welding positioners, material handling systems, and industrial automation requiring medium size crossed roller slewing bearing 0644 performance.
Q: Do you provide datasheets and CAD drawings?
A: Yes. Contact Us at mia@hgb-bearing.com to request the RKS.161.14.0644 datasheet PDF, 2D CAD drawings, or 3D models in STEP/IGES formats for your design verification.
Packaging & Global Shipping
We protect each aftermarket RKS.161.14.0644 China supplier product with anti-rust oil, polyethylene film, and custom wooden crates suitable for sea freight. Standard products ship within 5-7 days; customized solutions require 15-25 days depending on specifications. We've successfully delivered to customers in the United States, Germany, Australia, Malaysia, South Africa, and the Middle East with full export documentation.
Contact Us
Whether you need an RKS.161.14.0644 substitute, bulk orders, or custom modifications, our team is ready to support you. With competitive RKS.161.14.0644 Slewing Bearings price and factory direct manufacturing, you'll receive reliable performance without long lead times. Email us at mia@hgb-bearing.com for technical specifications, quotations, or to discuss your specific application requirements today.
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