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RKS.22.0841 Slewing Bearings

RKS.22.0841 is a light series single row four point contact ball slewing bearing with internal gear, manufactured to the SKF RKS.22 standard. With a 841 mm mean raceway diameter, 736 mm bore (28.98 in), 948 mm outside diameter (37.32 in) and 56 mm height, it weighs 63 kg — the first RKS.22 size with a module 8 internal gear, rated for 87 kN maximum tooth force for center-drive rotation in rotary tables, excavators and tower cranes.

Key points buyers care about:
• First RKS.22 size with a module 8 internal gear (94 teeth, pitch circle 752 mm) — tooth forces 21 kN normal / 87 kN max, up 31%/34% over the module 6 sizes for heavier pinion loads.
• Drop-in replacement — interchangeable with INA VLI200844-N (confirmed in Schaeffler medias US, product 398222, lip seals on both sides, OD tolerance -0.6 mm); variants VLI200844-N-RL1 (Lily) / -ZT-RL2 (RHIA) also listed.
• Extreme price gap — European retail anchor approx. USD 6,092 (sp-spareparts, 6 pcs) vs our factory-direct from USD 350 — roughly a 17x gap on the same INA number.
• Weight and temperature clarifications — catalogue weight is 63 kg (some distributors list 61.5 kg); standard NBR seals -40 to +110 °C (some list 120 °C with optional high-temperature seals); we supply to the catalogue and confirm by application.
• C 222 kN / C0 580 kN (+11% static over 0741); stock ships in 3-7 days; non-stock in 25-30 days; MOQ 1 pc.
• Application reach extends to handling manipulators (RKS.21.0841 scene) alongside rotary tables, excavators and tower cranes.
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  • Product Description

RKS.22.0841 Slewing Bearings | Light Series Internal Gear Turntable Bearing | Factory Direct Supply

Looking for a reliable RKS.22.0841 Slewing Bearings source with fast delivery and factory-direct pricing? Luoyang Heng Guan Bearing Technology Co., Ltd. is a modern enterprise with over 30 years of experience, specializing in slewing bearings from 50–10,000 mm diameter across P0/P6/P5/P4 precision grades. ISO9001 certified and RoHS compliant, we manufacture this 948×736×56 mm, 63 kg light-series single-row four-point contact ball bearing with an M8 internal gear, rated at C 222 kN dynamic / C0 580 kN static load. Exported to 50+ countries worldwide.

What Exactly Is the RKS.22 0841 Internal Gear Slewing Ring Bearing?

The RKS.220841 is a light-series, single-row four-point contact ball slewing ring bearing with an integrated internal gear. It belongs to the SKF RKS.22 series and is the first size in this series to feature a Module 8 gear (94 teeth, 752 mm pitch circle).

This makes it uniquely capable of handling heavier pinion loads — up to 87 kN maximum tooth force — which is a 34% increase over the smaller Module 6 sizes in the same series.

Its outer ring features a flange design for center-drive rotation. It's a go-to solution for applications that need a compact, low-profile bearing with strong gear engagement and combined axial, radial, and moment load capacity.

RKS.22.0841 Slewing Bearings factory

Full Technical Specifications

Parameter
Value
Model
RKS.22.0841 (SKF RKS.22 Light Series)
Structure
Single-row four-point contact ball, internal gear
Mean Raceway Diameter (dm)
841 mm
Outside Diameter (D)
948 mm / 37.32 in (tol. −0.6 mm)
Inside Diameter (d)
736 mm / 28.98 in
Total Height (H)
56 mm / 2.20 in (tol. ±1 mm)
Weight
63 kg (some distributors list 61.5 kg; we supply per catalogue)
Centring Diameter Outer (D1 / D2)
884 mm / 842.5 mm
Centring Diameter Inner (d1 / d2)
798 mm / 839.5 mm
Outer Ring Bolt Circle (Je)
920 mm / Bore Ke 18 mm / 14 holes
Inner Ring Bolt Circle (Ji)
805 mm / Thread Ki M12 / 20 holes
Ball Diameter
20 mm
Internal Gear Pitch Circle (d0)
752 mm
Module (m) / Teeth (z)
8 / 94 (pressure angle 20°, X=0)
Permissible Tooth Force (Tf)
21 kN normal / 87 kN max
Dynamic Load Rating (C)
222 kN
Static Load Rating (C0)
580 kN (+11% vs RKS.22.0741)
Raceway Hardness
HRC 55–62 (induction hardened)
Ring Material
C45E / 42CrMo4 / 50Mn
Seals
NBR integral, −40 to +110 °C (lip seals both sides on VLI200844-N)
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

Cross Reference & Interchange Guide

Sourcing a VLI200844 equivalent RKS.22.0841 Slewing Bearings? You're in the right place. This bearing has confirmed interchangeable models across multiple major brands.

Brand
Model Number
Notes
SKF
RKS.22.0841
Original reference
INA (Schaeffler)
VLI200844-N
Lip seals both sides; OD tol. −0.6 mm
INA Variant
VLI200844-N-RL1
Extended lip seal variant
INA Variant
VLI200844-N-ZT-RL2
Double-seal variant
Rollix
25 0841 01 / 28 0841 01
To be verified per application
Rothe Erde
280.30.1175.013
To be verified per application

If you're replacing a VLI200844-N or sourcing a Rollix 25 0841 01 equivalent, send us your drawing or nameplate data — our engineers will confirm compatibility before you order.

Why Choose Heng Guan Bearing for Your RKS.22.0841 Slewing Bearing?

We offer factory-direct pricing on the same INA VLI200844-N specification — no distributor markups.

But price is only part of the story. Here's what you also get:

· In-stock items ship in 3–7 days. Non-stock lead time is 25–30 days.

· MOQ is just 1 piece. No forced bulk orders.

· Material traceability from raw steel to finished bearing — every batch documented.

· Induction-hardened raceways at HRC 55–62 for long service life under shock loads.

· OEM/ODM support — we can match your original drawing or nameplate.

· Our team speaks your language: technical English support, full documentation, and FOB pricing available.

RKS.22.0841 Slewing Bearings certification

Where Is the RKS.22 Light Series Internal Gear Turntable Bearing Used?

This center-drive turntable bearing with internal gear teeth is built for demanding, low-speed, high-load environments. Typical application areas include:

· Precision rotary working tables — smooth, accurate indexing with center-drive gear engagement

· Excavators & construction excavator — handles high shock loads and moment forces in slewing upper carriages

· Tower cranes & gantry cranes — reliable center-drive rotation under heavy vertical loads

· Bending robots & gantry robots — compact L-shape range internal gear slewing ring bearing fits tight structural envelopes

· Solar trackers — lightweight, low-friction direct drive for photovoltaic azimuth rotation

· Wind turbine yaw systems — internal gear teeth lip seals slewing bearing resists dust and moisture ingress

· Radar antennas & marine equipment — high running accuracy (radial ≤0.2 mm) for precision pointing

RKS.22.0841 Slewing Bearings application

FAQ

Q1: What is the typical operating speed for this slewing bearing?

A: Slewing bearings are low-speed, heavy-load components. Normal working speed is usually under 10 RPM — most applications run at 1–5 RPM. Don't select this bearing using high-speed bearing logic; the design philosophy is completely different.

Q2: What load data do I need to provide for selection?

A: You'll need at minimum: ① maximum axial force; ② maximum radial force; ③ tilting moment (including load center distance); ④ duty type (continuous/intermittent/impact); ⑤ rotation angle (360° continuous or partial); ⑥ environment (temperature, dust, salt, humidity); ⑦ speed and start/stop frequency. The more complete your data, the more accurate our recommendation.

Q3: Can I wash this bearing with a high-pressure water gun?

A: No. High-pressure water forces past the seals into the raceway, mixing with grease to form an abrasive paste that accelerates wear and rust. Use low-pressure fresh water, avoid directing the stream at seals, and re-grease immediately afterward to purge any moisture.

Q4: What causes broken gear teeth on slewing bearings?

A: The main cause is incorrect gear clearance adjustment during installation — too tight or too loose causes abnormal impact loads that progressively crack teeth. Other causes include overloading, insufficient surface hardness, foreign objects in the mesh zone, and fatigue pitting that develops into spalling. Prevention: set clearance per drawing, clean gear faces regularly, and verify tooth surface hardness.

Q5: What is the minimum order quantity?

A: MOQ is 1 piece. High unit value and frequent custom requirements make single-piece orders standard in this product category. Larger volumes and long-term agreements receive better pricing — just ask when you inquire.

Q6: What payment terms do you accept?

A: Standard terms: T/T (30% deposit + 70% before shipment or against B/L copy). L/C accepted for larger orders. Sample orders may support PayPal. We follow a standard process: deposit → production photos/reports → pre-shipment inspection → balance → shipment.

Contact Us

Ready to get a quote for RKS.22.0841 Slewing Bearings? Email us at mia@hgb-bearing.com — we respond within 24 hours.

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