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RKS.22.0541 Slewing Bearings

RKS.22.0541 is a light series single row four point contact ball slewing bearing with internal gear, manufactured to the SKF RKS.22 standard. With a 541 mm mean raceway diameter, 445 mm bore, 648 mm outside diameter and 56 mm height, it weighs 41 kg — lightweight, compact and flexible for center-drive rotation in excavators and tower cranes.

Key points buyers care about:
• Drop-in replacement — interchangeable with INA VLI200544-N (confirmed in Schaeffler medias and marked remanufacturable); VSI200544-N is the alternative structure variant without the outer flange.
• European distribution proof — listed with ERIKS (Netherlands, item #14191790) and Misumi Europe (EUR 3,448.46 / EUR 4,103.67 incl. tax); our factory-direct price is a fraction of these anchors.
• Dimension/weight disputes settled — catalogue bore is 445 mm (some listings show 444 mm) and catalogue weight is 41 kg (some Alibaba listings mislist 38 kg); we supply to the catalogue.
• Module 6 internal gear, 76 teeth (pitch circle 456 mm); tooth forces 16 kN normal / 65 kN max; C 188 kN / C0 380 kN.
• Stock ships in 3-7 days; non-stock standard models in 25-30 days; MOQ 1 pc.
• Lightweight 41 kg with outer flange — compact for tower crane center drives and automated rotary tables.
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  • Product Description

RKS.22.0541 Slewing Bearings — Light Series Internal Gear Four Point Contact Ball Bearing for Center-Drive Applications

Luoyang Heng Guan Bearing Technology Co., Ltd. is your trusted source for the RKS.22.0541 Slewing Bearings — a light series, single-row four point contact ball slewing ring with internal gear. With a 648 mm OD, 445 mm bore, and just 41 kg, this compact turntable bearing delivers axial dynamic load rating C 188 kN and static C0 380 kN. Built on 20+ years of expertise, ISO9001 certified, and exported to 50+ countries, Heng Guan gives you factory-direct quality at a fraction of European distributor prices.

Full Technical Specifications of the RKS.22 0541 Internal Gear Slewing Bearing

Need to verify dimensions before ordering? Here are the confirmed catalogue values — no guesswork.

Parameter
Value
Model
RKS.22.0541 (RKS.220541)
Mean Raceway Diameter (dm)
541 mm
Outside Diameter (D)
648 mm
Inside Diameter (d)
445 mm (some listings show 444 mm — catalogue is 445 mm)
Centring Diameter Outer (D1 / D2)
584 mm / 542.5 mm
Centring Diameter Inner (d1 / d2)
498 mm / 539.5 mm
Total Height (H)
56 mm (±1 mm)
Weight
41 kg (some sources list 38 kg — catalogue is 41 kg)
Ball Diameter
20 mm (four point contact)
Internal Gear Pitch Circle (d0)
456 mm
Module (m) / Teeth (z)
6 / 76
Permissible Tooth Force (Tf)
16 kN normal / 65 kN max
Axial Dynamic Load Rating (C)
188 kN
Axial Static Load Rating (C0)
380 kN
Outer Ring Bolts
Circle Je 620 mm / Bore Ke 18 mm / 10 holes
Inner Ring Bolts
Circle Ji 505 mm / Thread Ki M12 / 16 holes
Ring Material
C45E / 42CrMo4 / 50Mn
Raceway Hardness
HRC 55–62 (induction hardened)
Seals
NBR integral, −40 to +110 °C
Lubrication
NLGI 2 lithium EP grease; 4 × AM8×1 nipples (DIN 71412)
Max Speed
≤ 1.5 m/s continuous / 2 m/s brief
Running Accuracy
Radial ≤ 0.2 mm / Axial ≤ 0.3 mm
Structure
Light series, internal gear + outer ring flange, center-drive

RKS.22 Series Gear Type Comparison

Model
OD / Bore / H
Weight
Gear Type
RKS.21.0541
640 / 434 / 56 mm
44 kg
External gear
RKS.22.0541
648 / 445 / 56 mm
41 kg
Internal gear
RKS.23.0541
648 / 434 / 56 mm
31 kg
No gear
RKS.062.20.0544 (medium)
640.8 / 476 / 56 mm
39 kg
Not a direct interchange

Cross Reference & Interchange for 22.0541 Slewing Ring Bearing

Looking for a VLI200544 equivalent or an RKS.22.0541 Slewing Bearings replacement? You're in the right place.

Brand
Part Number
Notes
SKF
RKS.22.0541
Original reference
INA / Schaeffler
VLI200544-N
Direct drop-in, confirmed interchange
INA / Schaeffler
VSI200544-N
Alternative structure, no outer flange
Kaydon
RK6-22N1Z
Compatible substitute
Rollix
22-0541-01
Compatible substitute
Rothe Erde
232.20.0500.013
Compatible substitute

> Note: VSI200544-N does not include the outer flange. Always confirm your mounting interface before substituting.

Where Is the RKS.22.0541 648x445x56mm Used?

This bearing handles combined axial, radial, and overturning loads at low speed — exactly what demanding center-drive applications need.

Excavators & Construction Excavator — The internal gear and four point contact design absorb heavy shock loads and tilting moments during upper-carriage rotation. It's one of the most common slewing ring configurations in excavator swing systems.

Tower Cranes & Lifting Equipment — At just 41 kg, the lightweight compact design is ideal for center-drive tower crane rotation. You get structural strength without unnecessary mass.

Automated Rotary Tables & CNC Machines — The module 6 / 76-tooth internal gear delivers precise center drive torque. Running accuracy of radial ≤ 0.2 mm and axial ≤ 0.3 mm supports repeatable positioning.

Packaging & Filling Machines — Continuous center-drive rotation at ≤ 1.5 m/s, combined with NBR seals rated to +110 °C, makes this turntable bearing well-suited for high-throughput production lines.

Robot Joint & Turret Applications — Where space is tight and a lightweight internal gear slewing bearing is required, the 648×445×56 mm envelope fits many standard robot and turret platforms.

RKS.22.0541 Slewing Bearings application

Why Choose Heng Guan for Your RKS.22.0541 Slewing Bearings?

You deserve more than just a part number — here's what working with us actually looks like.

· ✅ Factory Direct Pricing —You order direct from the manufacturer at a fraction of typical distributor prices.

· ✅ In Stock & Fast Delivery — Standard stock ships in 3–7 days. Non-stock standard models: 25–30 days. MOQ: 1 piece.

· ✅ Precision Grades Available — P0, P6, P5, and P4 grades to match your application.

· ✅ Drawings on Request — PDF/JPG dimensional drawings provided for installation verification. CAD files available for custom orders.

· ✅ Full Traceability — Every bearing is tracked from raw material to finished product with coordinate measuring machines and vibration testing.

· ✅ OEM/ODM Support — Custom dimensions, materials, and gear configurations available.

RKS.22.0541 Slewing Bearings certification

FAQ

Q1: What's the difference between a slewing bearing and a standard bearing?

A: Standard bearings handle single-direction loads at high speed. A slewing bearing — like the RKS.22 0541 — is a large-diameter, low-speed component that simultaneously handles axial loads, radial loads, and tilting moments, often with an integrated gear for direct drive.

Q2: Four point contact ball or cross roller — which should I choose?

A: For moderate loads with continuous rotation and cost efficiency, four point contact ball (like this model) is the right call. Cross roller bearings offer 2–3× more stiffness but cost more and suit high-precision robotics or machine tool applications better.

Q3: Can I mix different brands of grease?

A: No. Lithium-based, polyurea, and calcium sulfonate greases are chemically incompatible. Mixing them degrades lubrication performance and accelerates seal failure. Always flush old grease completely before switching types.

Q4: What causes gear tooth breakage on slewing bearings?

A: The most common cause is incorrect clearance adjustment during installation — too tight or too loose causes abnormal impact loads. Overloading, insufficient tooth hardness, and debris in the gear mesh are also frequent culprits. Always set clearance to drawing spec and inspect the gear face regularly.

Q5: Can I get a CAD drawing or datasheet for the RKS.22.0541?

A: Yes. We provide PDF/JPG dimension drawings for standard models. CAD files are available for custom orders. Contact Us with your request and we'll send what you need for installation verification.

Q6: Is sourcing from China reliable?

A: Absolutely — when you choose the right partner. Luoyang is China's bearing manufacturing hub. Heng Guan is ISO9001 certified, exports to 50+ countries, and provides full inspection documentation. Treat it as a supplier qualification question, not a geography question.

Contact Us

Ready to Order or Request a Quote with RKS.22.0541 Slewing Bearings? Contact us today at mia@hgb-bearing.com — stock ships in 3–7 days, MOQ 1 piece, factory-direct pricing.

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