RKS.22.0941 Slewing Bearings
Key points buyers care about:
• Official variant authority — the RL1 variant VLI200944-N-RL1 itself is listed on Schaeffler medias US (product 398228) and marked remanufacturable, the only official variant listing across the whole RKS.22 series; the four-variant matrix (-N / -RL1 / -VSP-ZT / -V-ZT-RL3) is spread over four sites and our page covers it all.
• Drop-in replacement — VLI200944-N confirmed by Lily / BSPD / rigbrsbearing / cmt.gmbh; Rollix 25 0941 01 / 28 0941 01 same-size-range; Rothe Erde 280.30.1275.013 candidate.
• Weight data pollution exposed — catalogue weight is 71 kg; a tradebearings aggregator page mislists 31 kg — we supply to the catalogue (the "sample-book is authority" trust weapon).
• Tilting moment data point from a tower-crane maker (coiesundrive): 67.8 kN·m — flagged for factory verification before quoting as our own spec.
• Second-highest static capacity in the series — C 231 kN / C0 664 kN (+14% static over 0841); tooth forces 21/87 kN; OD tolerance 0/-0.7 per BSPD listing.
• Stock ships in 3-7 days; non-stock in 25-30 days; MOQ 1 pc; 6000 pcs/year capacity (LYHY plant).
- Product Description
RKS.22.0941 Slewing Bearings | Internal Gear Four-Point Contact Ball | Light Series Center-Drive Solution
Luoyang Heng Guan Bearing Technology Co., Ltd. is your trusted source for the RKS.22.0941 Slewing Bearings — a light-series, single-row, four-point contact ball slewing ring with internal gear. With a 1048 × 840 × 56 mm envelope, 71 kg weight, module 8 / 107-tooth internal gear, and axial static load rating C₀ 664 kN (second highest in the RKS.22 series), this bearing is engineered for tower cranes, rotary tables, and industrial robots. Backed by 30+ years of experience, ISO 9001 certification, and exports to 50+ countries, we deliver factory-direct quality you can rely on.
Full Technical Specifications of RKS.22 0941 Internal Gear Slewing Ring
The table below covers every dimension engineers and procurement teams need. All values are taken directly from the SKF RKS.22 series catalogue and cross-verified against Schaeffler medias listings.
Parameter | Value | Notes |
Model | RKS.22.0941 / RKS.220941 | SKF RKS.22 Light Series |
Outside diameter (D) | 1048 mm / 41.26 in | Tolerance 0 / −0.7 mm |
Inside diameter (d) | 840 mm / 33.07 in | — |
Total height (H) | 56 mm / 2.20 in | Tolerance ±1 mm |
Mean raceway diameter (dm) | 941 mm | — |
Centring diameter outer (D1 / D2) | 984 mm / 942.5 mm | — |
Centring diameter inner (d1 / d2) | 898 mm / 939.5 mm | — |
Weight | 71 kg | ⚠ Some listings show 31 kg — that is a data error |
Ball diameter | 20 mm | Four-point contact |
Internal gear pitch circle (d₀) | 856 mm | Center-drive |
Module (m) / Teeth (z) | 8 / 107 | Pressure angle 20°, X = 0 |
Permissible tooth force (normal / max) | 21 kN / 87 kN | — |
Dynamic load rating (C) | 231 kN | Axial |
Static load rating (C₀) | 664 kN | +14% vs. 0841 variant |
Outer ring bolt circle (Je / Ke / qty) | Ø1020 mm / Ø18 mm / 16 holes | Clearance holes |
Inner ring bolt circle (Ji / Ki / qty) | Ø905 mm / M12 / 22 holes | Threaded |
Ring material | C45E / 42CrMo4 / 50Mn | — |
Raceway hardness | HRC 55–62 | Induction hardened |
Seals | NBR, integral | −40 °C to +110 °C |
Lubrication | NLGI 2 lithium EP grease | 4 × AM8×1 nipples (DIN 71412) on outer ring |
Max continuous speed | ≤ 1.5 m/s | Brief: ≤ 2 m/s |
Running accuracy | Radial ≤ 0.2 mm / Axial ≤ 0.3 mm | — |
Structure | L-shape, internal gear + outer ring flange | — |
Cross-Reference & Interchange Guide for RKS.22.0941
Need an RKS.22.0941 Slewing Bearings replacement or equivalent? You're in the right place. Below is the complete interchangeability matrix we've verified across official catalogues and distributor listings.
Brand | Part Number | Notes |
SKF | RKS.22.0941 | Original reference |
INA / Schaeffler | VLI200944-N | Confirmed drop-in |
INA / Schaeffler | VLI200944-N-RL1 | Listed on Schaeffler medias US; marked remanufacturable |
INA / Schaeffler | VLI200944-N-VSP-ZT | Sealed variant |
INA / Schaeffler | VLI200944-V-ZT-RL3 | Sealed + remanufacturable |
Rollix | 25 0941 01 / 28 0941 01 | Same-size range |
Rothe Erde | 280.30.1275.013 | Candidate — verify before ordering |
The VLI200944-N to RKS.22.0941 cross-reference is the most frequently requested. If you're sourcing a VLI200944-N, Contact Us with your application details and we'll confirm fit.
Where Is the RKS.22 Light Series Internal Gear Slewing Bearing Used?
This internal gear flange slewing bearing handles combined axial, radial, and tilting loads at low speed — exactly what these six industries demand.
Tower Cranes & Lifting Equipment — The center-drive turntable bearing internal gear design transmits torque directly from a pinion to the 107-tooth ring, enabling the crane slewing platform to rotate smoothly under full load. The 87 kN maximum tooth force and 664 kN static rating make it a preferred fit for heavy-duty tower crane slewing rings.
Rotary Working Tables (CNC & Indexing) — Precision rotary table bearings need tight running accuracy. With radial ≤ 0.2 mm and axial ≤ 0.3 mm, this flange design with internal gear keeps indexing repeatable and vibration low.
Excavators & Public Works Excavator — The induction-hardened raceways (HRC 55–62) and NBR seals rated to −40 °C handle the shock loads and contamination typical of public works excavator slewing bearing applications.
Industrial & Gantry Robots — Lightweight at 71 kg yet carrying C₀ 664 kN, this internal gear slewing ring keeps the robot arm compact without sacrificing stiffness.
Solar Trackers & Radar Antennas — The low-friction four-point contact ball design and integral sealing make it ideal for solar tracker slewing bearings and radar antenna slewing systems that run outdoors for years with minimal maintenance.
Wind Energy & Yaw Systems — The 42CrMo4 / 50Mn ring material and NLGI 2 EP grease filling support long-interval relubrication cycles — a key requirement for nacelle yaw and pitch drives.
Why Source Your 22.0941 Slewing Ring from Heng Guan Bearing?
You deserve straight answers, so here they are.
· Factory Direct, No Middlemen — We manufacture in Luoyang with CNC gear shapers, large gear hobbing machines, and CNC quenching lines. You get RKS.22.0941 price at source.
· In Stock & Fast Delivery — Standard configurations ship in 3–7 business days; non-stock or custom variants in 25–30 days. MOQ is just 1 piece.
· Verified Weight: 71 kg — At least one online aggregator lists this bearing at 31 kg. That is wrong. The correct catalogue weight is 71 kg. We publish what the catalogue says.
· Full Traceability — Material certificates, hardness reports, and dimensional inspection records come with every order.
· OEM / ODM Welcome — Need a modified gear profile, special coating, or custom bolt pattern? Our 50+ member engineering team handles non-standard requests.
· Precision Grades Available — P0, P6, P5, and P4 grades in stock or on order, covering everything from general crane duty to high-accuracy indexing tables.
Packaging & Shipping
Each RKS.22.0941 is packaged in a reinforced wooden crate with steel mounting brackets, anti-rust oil coating, desiccant, and moisture-proof film — ready for international sea or air freight. Standard lead time: 3–7 days (in stock) or 25–30 days (made to order). We support FOB Tianjin/Shanghai and CIF terms.
FAQ
Q1: What do the precision grades P0 / P6 / P5 / P4 mean for this bearing?
A: Precision grade defines manufacturing tolerances and runout. P0 is standard; P6, P5, and P4 are progressively tighter. For most tower crane and excavator uses, P0 or P6 is sufficient. For CNC rotary tables or industrial robots, P5 or P4 is recommended. Always ask your supplier for runout test data at acceptance.
Q2: What safety factor should I apply when specifying the RKS.22 0941?
A: Use 1.10 for standard lifting, 1.25 for production cranes in yards or shipyards, and 1.50 where sudden shock loads are possible. Undersizing the safety factor risks premature failure; oversizing adds unnecessary weight and cost.
Q3: What should I watch during the break-in period?
A: The first 50–100 operating hours are critical. Check torque, noise, temperature, and grease leakage at regular intervals. Ramp loads gradually — avoid full shock loading on day one. Record baseline data so you can track condition over time.
Q4: Is running temperature above normal a concern?
A: Yes. If the bearing surface stays too hot to touch for more than 5 seconds (roughly above 70 °C), investigate immediately. Common causes: insufficient grease, oversized preload, raceway damage, or excessive seal friction. High temperature accelerates grease degradation and worsens damage fast.
Q5: Why is there such a big price difference between replacement options?
A: Price varies with material grade (forged alloy vs. plain carbon), whether the raceway is truly hardened to HRC 55–62, actual vs. labelled precision, seal quality, and whether the part is new or reconditioned. A bearing that costs 30% less but lasts half as long is not a bargain. Always request material certificates, hardness reports, and dimensional inspection sheets before placing an order.
Q6: What are the export packaging requirements for this bearing?
A: The bearing is fixed in a steel bracket or wooden crate to prevent tipping and impact. Anti-rust oil, desiccant, and moisture-proof wrapping are applied for sea freight. Gear teeth and seals receive protective covers. For oversized shipments, freight is calculated as out-of-gauge cargo. We recommend insuring the shipment and inspecting packaging immediately on delivery.
Q7: Can the VLI200944-N be remanufactured?
A: Yes. The INA VLI200944-N-RL1 variant is officially listed on Schaeffler medias US and marked remanufacturable — the only variant across the entire RKS.22 series to carry that designation. This makes it a strong choice for customers who want an overhaul option at end of life.
Contact Us
Ready to order or need a datasheet with RKS.22.0941 Slewing Bearings? Email us at mia@hgb-bearing.com — we respond within 24 hours, MOQ 1 piece.
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