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Help CenterSingle Row Cross Roller Bearing Dynamic Load Rating 25kN for Machine Tools
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Henan San Kuang Machinery Technology Co., Ltd. – a trusted manufacturer established in 2014 with a factory spanning 10,000–30,000 square meters and over 50 skilled employees – presents our premium Single Row Cross Roller Bearing with a dynamic load rating of 25 kN, specifically engineered for high-precision machine tools. This bearing combines compact design with exceptional load capacity, ensuring smooth rotation and minimal deformation under heavy cutting loads. Backed by our ISO9001, ISO14001, and OHSAS18001 certified production processes, each unit delivers consistent performance for demanding industrial applications.
Our cross roller bearing features a unique roller arrangement where rollers are placed perpendicularly between inner and outer rings, separated by a cage. This design delivers high rigidity and accurate rotation, making it ideal for machine tool spindles, rotary tables, and indexing mechanisms. The 25 kN dynamic load rating ensures reliable operation even under continuous high-speed cycling, while the compact cross-section saves valuable space in your equipment.
Key Features & Technical Specifications
- High Dynamic Load Capacity: 25 kN (dynamic) enables handling of heavy axial and radial loads simultaneously.
- Low Friction Design: Crossed roller configuration reduces friction torque, allowing higher rotational speeds.
- Superior Rigidity: Minimal elastic deformation under load, ensuring machining accuracy.
- Compact Cross-Section: Saves space in spindles and rotary tables without compromising load capacity.
- Precision Grades: Available in standard P0, P6, or P5 tolerance classes (customizable upon request).
- Durable Materials: Standard GCR15 bearing steel with optional stainless steel or ceramic rollers for corrosive environments.
- Versatile Cage Options: Steel cage for high-speed applications, brass cage for heavy loads, or polyamide cage for reduced noise.
- Long Service Life: Properly heat-treated rings and rollers ensure extended fatigue life.
Typical Dimensional Range (Customizable)
| Parameter | Range | Remarks |
|---|---|---|
| Bore Diameter (d) | 20 mm – 200 mm | Custom sizes available |
| Outer Diameter (D) | 50 mm – 350 mm | Depends on load requirement |
| Width (B) | 15 mm – 40 mm | Compact design |
| Dynamic Load Rating (Cr) | 25 kN (standard) | Higher ratings upon request |
| Static Load Rating (Cor) | Up to 40 kN | Varies with size |
| Limiting Speed (grease) | 2,000 – 5,000 rpm | Depends on lubrication |
Advantages for Machine Tool Applications
- Enhanced Machining Accuracy: The high rigidity of crossed rollers minimizes deflection under cutting forces, resulting in tighter tolerances and better surface finish.
- Increased Productivity: Low friction enables higher spindle speeds, reducing cycle times while maintaining precision.
- Reduced Maintenance: Robust construction and premium materials extend bearing life, lowering downtime and replacement costs.
- Space Efficiency: The slim profile allows integration into compact machine designs without sacrificing load capacity.
- Versatility: Suitable for both vertical and horizontal applications, including rotary tables, indexing heads, and multi-axis machining centers.
Frequently Asked Questions (FAQ)
-
Q: What is the difference between a single row cross roller bearing and a standard ball bearing?
A: Cross roller bearings use cylindrical rollers arranged perpendicularly, providing higher rigidity and load capacity in a compact space, ideal for moment loads and oscillating movements common in machine tools. -
Q: Can this bearing handle both radial and axial loads?
A: Yes, the crossed roller design supports simultaneous radial, axial, and moment loads, making it suitable for complex loading conditions in rotary tables and spindles. -
Q: Is the 25 kN dynamic load rating sufficient for heavy-duty machining?
A: For most medium-sized CNC machines and milling applications, 25 kN dynamic load capacity is adequate. For heavier loads, we can customize bearings with higher ratings (e.g., 40 kN or more) based on your requirements. -
Q: What lubrication is recommended?
A: We recommend lithium-based grease for general use. For high-speed or extreme temperature applications, oil lubrication (oil mist or oil-air) is available. Contact our engineers for specific recommendations. -
Q: Are these bearings available with seals or shields?
A: Yes, we offer open, shielded (2Z), and sealed (2RS) options. Sealed variants are pre-greased and require no maintenance. Please specify when ordering. -
Q: What precision grades are available for machine tools?
A: We supply P0 (normal), P6 (higher precision), and P5 (precision) grades. For ultra-precision applications, P4 grade is available upon request with longer lead time. -
Q: Do you provide custom sizes or special materials?
A: Absolutely. Our factory (10,000–30,000 sqm) can produce non-standard dimensions, stainless steel, ceramic rollers, or hybrid designs. Please provide your drawings or specifications. -
Q: What is the typical lead time for standard sizes?
A: For standard sizes and quantity up to 100 pieces, lead time is 15–20 working days. Custom orders require 25–35 days. We ship via Shanghai, Lianyungang, Qingdao, or Tianjin ports.
Trust & Credibility
With annual export value exceeding US$2.5 million and clients in North America, South America, Europe, Asia, Africa, and Oceania, Henan San Kuang Machinery Technology Co., Ltd. has built a reputation for quality and reliability. Our factory occupies 10,000–30,000 square meters, staffed by 51–100 professionals dedicated to precision manufacturing. We hold multiple certifications including ISO9001, ISO14001, OHSAS18001, and others, ensuring consistent quality control from raw material to final inspection. Each bearing undergoes rigorous testing – dimensional checks, noise measurement, and load testing – before shipment.
Choose our Single Row Cross Roller Bearing for your machine tools and experience the difference in performance and longevity. Contact us today for a quotation or technical consultation – we are ready to support your projects with customized solutions and prompt delivery.
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