RKS.21.0411 Slewing Bearings
• Six-brand cross reference: SKF RKS.21.0411 ↔ INA VLA200414-N ↔ Kaydon RK6-16E1Z ↔ Rollix 21-0411-01 ↔ Rothe Erde E.505.20.00.C / 91-20 0411 / 231.20.0400 ↔ Schaeffler 88.0650.00 — only the SKF flagship independent page covers all six numbers in one table (rigiabearing + Jiawei Alibaba six-number title evidence).
• Filling machine price anchor: Alibaba Jinan Kaiming 17-year Gold Supplier lists "Filling Machine Bearing Rotary Filler Bearing RKS.22 0411 RKS.21 0411" at US$36/pc (5.0★) — your $200 Jiawei listing is the high-end reference; this is the price band US/EU filling-line buyers actually search for.
• Data integrity gap = trust moat: bearing-inc mistakenly publishes "495 x 503.3 x 56 mm" (wrong bore), mymed.cc mislabels as "Medium Series" (it is Light); an "all specs per SKF catalogue" table dominates engineers' trust calc.
• L shape + small flange structure words: csbbearings uses "L Shape Precision Swing Bearing", XZWD uses "small flange slewing ring bearing with external gear" — these are the two Light-series-only structure keywords (full series coverage only 1/8 each across the 8 competitors benchmarked).
• L-shape flange on inner ring (Light series signature) + 4 × AM8×1 relubrication fittings on inner ring + NBR integral seal −40 ~ +110 °C + 50Mn/42CrMo4 ring material + HRC 55-62 raceway hardness.
• Air-freight friendly 32 kg — independent stations can quote 3-5 days door-to-door air-freight lead time as a differentiator against 60-86 kg same-series models; perfect for filling-machine / Filling-line urgent replacement orders.
• Three-gear-type self-collision protection: external = RKS.21.0411 (this page, 32 kg), internal = RKS.22.0411 (31 kg), no gear = RKS.23.0411 (23.5 kg) — internal link anchors from M2 parameter table prevent cross-type cannibalisation in the same size family.
- Product Description
RKS.21.0411 Slewing Bearings — Light Series External Gear Turntable Bearing for Filling & Automation Equipment
Luoyang Heng Guan Bearing Technology Co., Ltd. is a modern enterprise with over 30 years of experience in high-precision bearing manufacturing. Located in Luoyang, China's bearing hub, our 50+ member team specializes in Slewing Bearings from 50–10,000 mm diameter across P0–P4 precision grades. The RKS.21.0411 Slewing Bearings — a four-point contact ball slew ring with external gear, 505 mm OD, 304 mm bore, 56 mm height, and just 32 kg — is a flagship light-series product trusted by customers across 50+ countries. ISO9001 certified. RoHS compliant.
Full Technical Specifications of RKS.21 0411 Light Series Slewing Ring
Parameter | Value |
Mean raceway diameter dm | 411 mm |
Outside diameter D (incl. gear tip) | 505 mm (19.88 in) |
Inner diameter d | 304 mm (11.97 in) |
Total height H | 56 mm ±1 mm (2.20 in) |
Outer-ring centring diameter D2 | 412.5 mm |
Inner-ring centring diameter d1 | 368 mm |
Inner-ring inner diameter d2 | 409.5 mm |
Weight | 32 kg |
Outer-ring bolt pattern | 10 × M12 threaded holes on Je = 455 mm circle |
Inner-ring bolt pattern | 12 × Ø18 mm plain holes on Ji = 332 mm circle |
Gear pitch circle d0 | 495 mm |
Gear module × teeth | m5 × z99 (pressure angle 20°) |
Permissible gear tooth force Tf normal / max | 12 kN / 46 kN (3 million cycles, normalized tooth) |
Basic dynamic axial load rating C | 169 kN |
Basic static axial load rating C0 | 284 kN |
Ball diameter | 20 mm (four-point contact) |
Ring material | C45E / 42CrMo4 / 50Mn |
Raceway hardness | HRC 55–62 (induction hardened) |
Seal | NBR integral seal, −40 ~ +110 °C |
Lubrication | NLGI 2 lithium EP grease, 4 × AM8×1 fittings on inner ring |
Speed limit | 1.5 m/s continuous / 2 m/s short-time (circumferential) |
Running accuracy | Radial ≤ 0.2 mm / Axial ≤ 0.3 mm |
Cross Reference & Interchange — RKS.210411 Equivalent Bearings
If you're sourcing a replacement, this bearing has direct dimensional interchanges across major brands.
Brand | Part Number |
SKF | RKS.21.0411 |
INA (Schaeffler) | VLA200414-N |
Kaydon | RK6-16E1Z |
Rollix | 21-0411-01 |
Rothe Erde | E.505.20.00.C / 91-20 0411 / 231.20.0400 |
Schaeffler | 88.0650.00 |
XZWD | WD-231.20.0414 |
Whether you're looking for an RKS.21.0411 Slewing Bearings replacement, equivalent, or cross-reference, Heng Guan can supply a factory-direct alternative that meets the same dimensional and performance standards.
Key Product Advantages
1. Air-Freight Friendly at Just 32 kg
As the smallest model in the RKS.21 light series, the 32 kg unit weight makes 3–5 day door-to-door air freight from China to the EU or US genuinely practical. When a bottling line goes down, fast replacement matters.
2. L-Shape Inner Ring Flange Design
The L-shape flange on the inner ring is a signature of the Light series. It delivers tighter mounting clearance and more stable rotation — ideal for precision rotary tables and filling machine turntables.
3. Four-Point Contact Ball Design
The 20 mm ball four-point contact design handles combined axial, radial, and tilting moment loads in a single compact unit. You get versatile load capacity without adding bulk.
4. Induction-Hardened Raceway HRC 55–62
Raceway hardness is maintained at HRC 55–62 through induction hardening, while the 42CrMo4 or 50Mn ring core stays tough enough to absorb shock loads. Long service life, less downtime.
5. Wide Temperature Range Seal
The NBR integral seal performs reliably from −40 °C to +110 °C, making this slewing ring bearing suitable for demanding food processing and cold-chain packaging environments.
6. Easy Relubrication
Four AM8×1 relubrication fittings on the inner ring allow routine maintenance without disassembly — keeping your filling line running longer between service intervals.
Application Scenarios for the 21.0411 Light Series Turntable Bearing
This bearing is purpose-built for light-duty, precision-rotation applications. You'll find it working reliably in:
· Filling & bottling machines — rotary filler turntables, capping heads, indexing platforms
· Food & beverage packaging lines — where hygiene, low noise, and consistent rotation are critical
· Light automation equipment — rotary work tables, pick-and-place turntables, assembly indexers
· Precision rotary mechanisms — L-shape small flange slewing ring applications requiring compact mounting
If your equipment runs a continuous rotation cycle at low speed with moderate combined loads, this light-duty four-point contact ball slewing bearing is likely the right fit.
Why Source Your RKS.21.0411 Slewing Bearings from Heng Guan?
We're not a trading company. We manufacture.
Our CNC vertical lathes, CNC gear shapers, large gear hobbing machines, and CNC quenching equipment handle every step in-house. Every bearing goes through coordinate measuring machines, vibration testing, and life-cycle testing before it ships.
You get factory-direct pricing, full dimensional traceability from raw material to finished product, and a team of engineers ready to help with selection, mounting guidance, or custom requirements. OEM/ODM orders are welcome.
Products have been exported to 50+ countries including the United States, Germany, the United Kingdom, Australia, and across the Middle East — with positive feedback from customers in filling excavator, automation, and precision equipment sectors.
FAQ
Q: What is RKS.21.0411?
A: It is the smallest model of the SKF RKS.21 light series — a single-row four-point contact ball slewing bearing with an external gear. Key dimensions: 411 mm mean raceway diameter, 304 mm bore, 505 mm outside diameter (gear tip), 56 mm height, and 32 kg weight.
Q: What are the exact dimensions of RKS.21.0411?
A: Bore 304 mm (11.97 in), outside diameter 505 mm (19.88 in) including gear tips, height 56 mm (2.20 in). Gear pitch circle 495 mm, module 5, 99 teeth.
Q: Is RKS.21.0411 equivalent to INA VLA200414-N?
A: Yes. INA VLA200414-N, Kaydon RK6-16E1Z, Rollix 21-0411-01, and Rothe Erde E.505.20.00.C / 91-20 0411 / 231.20.0400 are all dimensionally interchangeable with the SKF RKS.21.0411.
Q: What is the load capacity of RKS.21.0411?
A: Dynamic axial load rating C = 169 kN; static axial load rating C0 = 284 kN. Permissible gear tooth force is 12 kN normal and 46 kN maximum (normalized tooth, 3 million cycles).
Q: Is RKS.21.0411 in stock and how fast can it ship?
A: Stock models typically ship within 3–7 days, with air freight available for the 32 kg unit. Non-stock standard models require 25–30 days. MOQ is 1 piece.
Get a Fast Quote Today
Need a price or datasheet for the RKS.21.0411 Slewing Bearings? Email us at mia@hgb-bearing.com — we respond within 24 hours, MOQ 1 piece.
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