RKS.161.14.0844 Slewing Bearings
It is a drop-in replacement for the SKF RKS.161.14.0844 and Rothe Erde 161 series crossed roller slewing bearings, and is dimensionally equivalent to INA XSA14 0844N. The crossed roller raceway carries combined loads with high stiffness, suitable for industrial automation, welding manipulators, excavator swing platforms, drilling rigs and radar antenna mounts.
- Product Description
RKS.161.14.0844 Single Row Crossed Roller Slewing Bearing - External Gear for Industrial Automation and Heavy Equipment
Luoyang Heng Guan Bearing Technology manufactures the RKS.161.14.0844 Slewing Bearings with precision engineering backed by over 30 years of expertise. This crossed cylindrical roller bearing features an 844 mm mean raceway diameter, 774 mm bore, 950.4 mm outside diameter, and 56 mm total height, weighing just 71 kg. With a static axial load capacity (C0) of 1220 kN and dynamic rating (C) of 244 kN, it delivers robust performance for industrial automation and excavator swing platforms.
Our ISO9001-certified facility in Luoyang produces slewing bearings from 50-10000mm diameter with precision grades P0, P6, P5, and P4. Equipped with CNC vertical lathes, quenching machines, and gear shapers, we ensure raceway hardness of HRC 55-62 and running accuracy within radial ≤ 0.2 mm / axial ≤ 0.3 mm tolerances.
Technical Specifications and Dimensions
The 161.14.0844 series crossed roller design provides exceptional stiffness for combined loads. Below are the complete specifications for your application evaluation:
Parameter | Value | Notes |
Mean raceway diameter (dm) | 844 mm | - |
Inside diameter (d) | 774 mm (30.47 in) | Mounting bore |
Outside diameter (D) | 950.4 mm (37.42 in) | Includes gear tooth tip |
Centring diameter outer (D1) | 846 mm | - |
Centring diameter inner (d1) | 842 mm | - |
Total height (H) | 56 mm | Tolerance ±1 mm |
Weight | 71 kg (156.5 lb) | - |
Outer ring bolts | M12 / 36 pcs / Ø885 mm | Threaded holes |
Inner ring bolts | 14 mm / 40 pcs / Ø798 mm | Through holes |
Gear pitch circle (d0) | 936 mm | - |
Module / Teeth | 8 / 117 | Pressure angle 20° |
Addendum modification (k·m) | −0.8 | - |
Permissible tooth forces | 21 kN / 72 kN | Normal / Max (3M cycles) |
Dynamic load rating (C) | 244 kN | Axial |
Static load rating (C0) | 1220 kN | Axial |
Roller diameter | 14 mm | 100Cr6, through-hardened |
Ring material | C45E / 42CrMo4 / 50Mn | - |
Raceway hardness | HRC 55-62 | Induction hardened |
Seals | NBR integral | −40 to +110 °C |
Lubrication | NLGI 2 lithium EP | 4 × M10×1 fittings |
Speed limit | ≤ 1.5 m/s continuous | 2 m/s brief |
Running accuracy | Radial ≤ 0.2 mm / Axial ≤ 0.3 mm | - |
Equivalent and Interchangeable Models
The RKS 161 14 0844 is a direct replacement for multiple global brands. This cross-reference compatibility ensures you can upgrade or substitute existing equipment without redesigning mounting interfaces.
Original Brand | Model Number | Notes |
SKF | RKS.161.14.0844 | Original standard |
Rothe Erde | 161.14.0844 | Dimensional match |
INA | XSA14 0844N / XSU14 0844 | External gear version |
INA | XSI14 0844N | Alternative designation |
- | VSU 200844 | Four-point ball no-gear equivalent |
The XSA140844N from INA differs by only 0.3 mm in outside diameter (950.1 mm vs 950.4 mm) with identical bolt patterns, making it fully interchangeable for most applications. If you're sourcing an aftermarket RKS.161.14.0844 China supplier, our bearings maintain the same dimensional accuracy and load ratings as the original SKF design.
Design Advantages and Performance Features
Crossed Roller Configuration
The 161 series uses 14 mm crossed cylindrical rollers in a single row arrangement. This design delivers superior stiffness compared to ball bearings, reducing elastic deformation under moment loads. The rollers are made from 100Cr6 bearing steel with through-hardening for uniform fatigue resistance.
External Gear Integration
The m8 z117 external gear with 936 mm pitch circle diameter allows direct drive from pinions. The normalized gear withstands 21 kN continuous tooth force and 72 kN peak loads for 3 million cycles. The −0.8 addendum modification optimizes contact ratio and reduces noise.
Load Capacity
With C0 1220 kN static capacity, this 844 slewing bearing handles the tilting moments from excavator booms and drilling masts. The dynamic rating of 244 kN supports continuous rotation in material handling turntables and welding manipulators.
Precision and Accuracy
Our CNC machining centers hold radial runout ≤ 0.2 mm and axial runout ≤ 0.3 mm. This precision is critical for welding manipulator accuracy and radar antenna positioning, where angular errors accumulate over rotation.
Sealing and Lubrication
Integral NBR seals protect against dust ingress in mining and construction environments. Four M10×1 grease fittings allow routine relubrication with NLGI 2 lithium EP grease, extending service life in excavator swing bearing applications.
Industrial Applications
Industrial Automation and Robotics
The crossed roller slewing bearing 950.4mm OD provides low friction torque for robotic arms and automated assembly lines. The high stiffness prevents workpiece vibration during precision operations.
Welding Manipulators and Positioners
RKS.161.14.0844 Slewing Bearings external gear enables synchronized rotation for welding torches. The 56 mm height fits within compact positioner frames while maintaining 1220 kN load capacity for heavy workpieces.
Excavator and Construction Excavator
As an excavator swing bearing, the 774x950.4x56 slewing bearing withstands combined boom loads and counterweight moments. The 71 kg weight reduces upper structure mass compared to triple-row designs.
Drilling Rigs and Mining Equipment
The drilling rig slewing bearing external gear drives rotary tables under high torque. The induction-hardened raceway resists contamination from drilling mud and abrasive particles.
Material Handling and Packaging
For bottling line turntables and palletizing robots, this medium size crossed roller slewing bearing 0844 offers smooth rotation at speeds up to 1.5 m/s continuous operation.
Radar and Antenna Systems
The radar antenna slew bearing 0844 maintains angular accuracy for tracking systems. The P5 precision grade option ensures repeatable positioning in defense applications.
Manufacturing Capabilities and Quality Control
Our Luoyang facility houses CNC vertical lathes for machining rings up to 10000 mm diameter. CNC quenching machines deliver uniform HRC 55-62 hardness depth of 3-6 mm. Large gear hobbing machines cut module 8 teeth to DIN 3962 quality grade 7.
Every RKS.161.14.0844 slewing bearing undergoes coordinate measuring machine inspection for dimensional accuracy. Vibration testers verify smooth rotation, and hardness testing confirms raceway treatment. We maintain full traceability from raw material certificates to final inspection reports.
Our engineering team provides technical consultation for custom modifications. If you need personalized non-standard customization such as altered bolt patterns or special coatings, we offer old product mapping services even without 3D drawings.
Why Choose Heng Guan Bearing?
Direct Factory Pricing
As a China manufacturer with in-house production, we eliminate distributor markups. Request your RKS.161.14.0844 price quote and compare our factory direct rates.
Flexible Order Quantities
We support both small batch orders for prototypes and bulk shipments for OEM production lines. Check our current RKS.161.14.0844 in stock status for fast delivery.
Global Standards Compliance
Our products meet ISO, DIN, and GB standards with RoHS compliance. We've supplied over 50 countries across Europe, North America, Southeast Asia, and the Middle East.
Engineering Support
Our team of over 50 engineers provides selection guidance, installation support, and load calculation assistance. Whether you need an RKS.161.14.0844 substitute or a complete rotary table bearing system, we deliver comprehensive solutions.
FAQ
Q: What is RKS.161.14.0844?
A: RKS.161.14.0844 is a single row crossed cylindrical roller slewing bearing with external gear, manufactured to SKF RKS.161 standard. It features an 844 mm mean raceway diameter, 774 mm bore, 950.4 mm outside diameter, and 56 mm height, weighing 71 kg.
Q: What are the dimensions of RKS.161.14.0844?
A: Bore 774 mm (30.47 in), outside diameter 950.4 mm (37.42 in), total height 56 mm, weight 71 kg (156.5 lb). Gear: pitch circle 936 mm, module 8, 117 teeth with 20° pressure angle.
Q: Is RKS.161.14.0844 equivalent to INA XSA14 0844N or VSU 200844?
A: Yes. INA XSA14 0844N (external gear) is dimensionally equivalent with only 0.3 mm OD difference (950.4 vs 950.1 mm) and identical bore, height, and bolt pattern. VSU 200844 is the four-point ball no-gear family version with different load characteristics.
Q: What is the load capacity of RKS.161.14.0844?
A: Dynamic axial load rating C = 244 kN, static axial load rating C0 = 1220 kN. Permissible tooth forces are 21 kN normal operation and 72 kN maximum for the normalized gear across 3 million cycles.
Q: What applications use RKS.161.14.0844?
A: Industrial automation systems, welding manipulators and positioners, excavator swing platforms, drilling rigs, material handling and packaging equipment turntables, and radar antenna mounts requiring precision rotation.
Q: Can you provide RKS.161.14.0844 datasheet PDF or 3D model?
A: Yes. Contact our technical team at mia@hgb-bearing.com with your application details. We provide CAD drawings, dimension sheets, and load calculation support for integration into your equipment design.
Packaging and Delivery
We protect each bearing with rust-preventive oil coating, plastic wrapping, and wooden crate packaging suitable for sea freight. Standard products ship within 5-10 business days. Custom modifications require 15-25 days depending on complexity. Our logistics team coordinates DDP or FOB shipments to your specified port.
Contact Us
Ready to upgrade your equipment with RKS.161.14.0844 Slewing Bearings? Our experienced team is here to assist with product selection, custom modifications, and technical specifications. Whether you need a single unit for maintenance or volume orders for production, Heng Guan Bearing delivers quality and service you can trust.
Email us today: mia@hgb-bearing.com for immediate quotation, lead time confirmation, and engineering support for your industrial automation or heavy excavator project.
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