RKS.900155101001 Slewing Bearings

RKS.900155101001 Slewing Bearing - Customized Compact Four Point Contact Ball Bearing Without Gear for Precision Lightweight Applications

Luoyang Heng Guan Bearing Technology brings you the RKS.900155101001 Slewing Bearings, a customized single row four point contact ball slewing bearing without gear from the SKF-compatible RKS 90 series. With over 30 years of expertise in slewing ring manufacturing, we deliver this compact no-gear slewing bearing featuring a mean raceway diameter of 179 mm, 125 mm bore (4.92 in), 234 mm outside diameter (9.21 in), and just 25 mm height.

Weighing only 6 kg (13.2 lb), this is the lightest model in the customized RKS range, perfectly suited for solar trackers, medical devices, robot joints, and packaging excavator. ISO9001 certified and RoHS compliant, our precision grades reach P6/P5 with GCr15 rolling elements and double sealed design for cleanroom-compatible rotation.

Technical Specifications of RKS.900155101001

Below is the complete dimensional and technical data for the 900155101001 slewing ring bearing:

Why Choose RKS 900155101001 Slewing Bearing Without Gear?

When you need a compact slewing bearing 125x234x25, the RKS.900155101001 offers distinct advantages for space-constrained and weight-sensitive applications.

Ultra-Lightweight Construction: At just 6 kg, this is the lightest model in the customized RKS no gear slewing ring 90 series. You benefit from reduced machine weight, simplified installation, and air freight compatibility for urgent international delivery.

Zero-clearance Rotation: The customized slewing ring bearing no gear design eliminates clearance entirely. Whether you use friction drive, chain drive, or direct motor coupling, your positioning accuracy remains uncompromised.

High Precision Performance: With ISO P6/P5 precision grades, ground raceways, and GCr15 bearing steel balls, you achieve smooth, accurate rotation suitable for medical imaging, robot positioning, and precision measurement equipment.

Sealed for Contamination Protection: Double seals protect internal components from dust, moisture, and contaminants, making the RKS.900155101001 slewing bearing no gear ideal for cleanroom environments and outdoor installations.

US Distribution Compatible: Listed with Motion (SKU 04782086), this reference is recognized in US supply chains. You get the same dimensional standard as the original SKF bearing at factory-direct pricing.

Core Advantages of Customized Four Point Contact Ball Design

The customized four point contact ball raceway design is the heart of this slewing bearing's versatility. Unlike external gear models that require mesh engagement, your no-gear bearing handles axial, radial, and tilting moment loads simultaneously in a compact envelope.

Multi-Directional Load Capacity: Four point contact geometry means each ball touches both inner and outer raceways at four distinct points. This distributes combined loads efficiently without requiring separate thrust and radial bearing sets.

Compact Cross-Section: With a total height of just 25 mm, the RKS.900155101001 234x125x25mm bearing fits tight spaces where traditional roller bearings cannot. You maximize your machine's payload capacity while minimizing structural volume.

Smooth Low-Speed Operation: Ground raceways and precision balls ensure stick-slip-free rotation even at slow speeds, critical for solar tracking, medical scanning, and antenna positioning applications.

Application Areas for Lightweight Slewing Bearing 6 kg

Solar Tracker Systems: For lightweight slewing bearing for solar tracker installations, every kilogram matters. The 6 kg weight reduces structural load and drive motor torque requirements in single-axis and dual-axis tracking systems. The no-gear design pairs perfectly with worm gear or friction drive actuators.

Medical Equipment: In medical imaging gantries, surgical tables, and patient positioning systems, you need cleanroom-compatible rotation. The double-sealed compact slewing bearing for medical device applications prevents contamination while delivering smooth, silent movement for diagnostic accuracy.

Robot Joints & Automation: For small slewing ring for robot joint applications, zero-clearance precision is non-negotiable. The no-gear design provides direct servo coupling for collaborative robots, pick-and-place systems, and precision assembly stations without gear tooth play.

Packaging Excavator: Rotary filling stations, indexing turrets, and labeling equipment benefit from the sealed design and lightweight rotation. Your slewing bearing for packaging machine installations achieve high-speed indexing with minimal drive load and maintenance downtime.

Antenna & Radar Platforms: For lightweight bearing for antenna and radar slew rings, the P6/P5 ground raceways deliver smooth azimuth rotation for signal alignment. The light weight enables mast-top mounting and mobile platform integration without structural reinforcement.

Small Rotary Tables: Precision worktables, indexing fixtures, and rotary inspection stations gain zero-clearance positioning with the four point contact design. Your machining and measurement operations maintain repeatability over millions of cycles.

Interchange Reference & Replacement Compatibility

The RKS.900155101001 Slewing Bearings replacement follows SKF dimensional standards. When cross-referencing, note these equivalents:

Primary Interchange: SKF RKS.900155101001, Motion (US distribution) SKU 04782086. Our bearing matches the 24-hole outer ring (Ø214 mm bolt circle) and 19-hole inner ring (Ø144.5 mm bolt circle) exactly.

No-Gear Same-Family: For dimensional comparison within the RKS no-gear family, see RKS.951145101001 and RKS.901175101001. These share the four point contact ball design but differ in diameter and load ratings.

Custom 12-Digit References: Customized models like the 900155101001 have no direct INA or Kaydon catalogue counterpart. We provide engineering confirmation within 24 hours for your specific application loads (Fa, Fr, Mk).

Load Capacity & Engineering Confirmation

Unlike standard catalogue bearings, the RKS.900155101001 4.92 x 9.21 inch bearing's load capacity depends on your specific application conditions. Send us your axial force (Fa), radial force (Fr), and tilting moment (Mk), along with rotation speed and duty cycle.

Our engineering team calculates dynamic and static load ratings per ISO 281 standards and confirms suitability within 24 hours. For slow-moving slewing applications, static safety factors often take precedence over L10 fatigue life calculations.

The four point contact design efficiently distributes combined loads, but proper preload adjustment during installation is critical to optimize contact angle and load distribution.

Manufacturing Quality & Precision Control

We make slewing bearings with precision grades P0, P6, P5, and P4 at Luoyang Heng Guan Bearing. Our bearings have diameters ranging from 50 to 10000 mm. This is what your RKS 900155101001 bearing does:

Choose the right material: 42CrMo4 rings with GCr15 (52100/100Cr6) precision balls to keep their shape and prevent wear.

Heat Treatment: Induction hardening makes the raceways' surfaces 55–62 HRC hard while keeping the core tough so it can handle shock loads during installation and operation.

Precision Grinding: Coordinate measure machines and CNC grinding machines check the roundness of the raceways, the finish on the surface, and the size tolerances according to ISO P6/P5 standards.

Seal Testing: Double seals are put through pressure tests to make sure they provide IP65-level protection against water and dirt in both outdoor and indoor settings.

Full Traceability: From receiving the raw materials to the final inspection, every step is written down. This lets you track the quality of every critical application.

Packaging & Delivery Details

Stock: Standard setups can be shipped in 5 days. It takes 50 days to make custom designs with unique seals, coats, or fixing holes. The minimum order quantity is one piece.

Export Packaging: Each bearing is covered in rust-proof oil, wrapped in VCI paper, and put in wooden cases that can be shipped by sea or air. Because it only weighs 6 kg, shipping by air is a cheap option for pressing orders.

Global Logistics: We've sent goods to more than 50 countries, such as the US, Germany, the UK, Australia, Mexico, Malaysia, and the Middle East. Our transportation partners take care of customs paperwork and delivery from door to door.

FAQ

Q: What is RKS.900155101001?

A: RKS.900155101001 is a customized single row four point contact ball slewing bearing without gear from the SKF RKS series. It features a 179 mm mean raceway diameter, 125 mm bore, 234 mm outside diameter, 25 mm height, and weighs just 6 kg.

Q: What are the dimensions of RKS.900155101001?

A: Bore 125 mm (4.92 in), outside diameter 234 mm (9.21 in), height 25 mm (0.98 in), weight 6 kg (13 lb). No gear. Bolt circles: 214 mm outer (24 × 11 mm through holes) and 144.5 mm inner (19 × 11 mm through holes). ISO P6/P5 precision, double sealed, GCr15 balls.

Q: What is the load capacity of RKS.900155101001?

A: The four point contact design carries combined axial, radial, and tilting moment loads. Load ratings are confirmed by engineering calculation for your specific application. Send your loads (Fa, Fr, Mk), speed, and environment, and we confirm suitability within 24 hours.

Q: Is RKS.900155101001 available from US distributors?

A: Yes. The bearing is listed with Motion (SKU 04782086) in the US. As a factory, we supply the same SKF-compatible bearing at factory-direct pricing with technical support and custom modifications.

Q: Is RKS.900155101001 in stock?

A: Stock models ship in 5 days; custom designs in 50 days. MOQ 1 piece. Contact Us for current availability, CAD drawings, datasheets, and factory-direct pricing.

Q: How do I request a CAD drawing or datasheet?

A: Email us at mia@hgb-bearing.com with your model number. We provide 2D technical drawings, 3D STEP models, load capacity datasheets, and interchange information within 24 hours.

Get Your Factory-Direct Quote Today

Need the RKS.900155101001 Slewing Bearings for your next project? Whether you require one piece for prototype testing or bulk orders for production, our team is ready to support you. Contact us at mia@hgb-bearing.com for pricing, technical consultation, and fast delivery to your location worldwide.