INA NUTR35-A Yoke Type Track Rollers 35x72x29mm

Key Specifications

Design Features & Benefits

1. Double-Row Cylindrical Rollers

   The double-row design provides significantly higher load capacity (both dynamic and static) compared to single-row track rollers, improving stability and reducing wear even under heavy radial loads. The full complement cylindrical roller set maximizes the number of rolling elements in the available space, further enhancing load-bearing capabilities.
2. Crowned Outer Ring (Suffix "A")

   The suffix "A" indicates an improved crowned profile of the outer ring running surface, which allows for compensation of minor misalignments (up to 0.5°) between the bearing and the track. This feature ensures even load distribution across the rolling elements, reduces stress concentrations, and extends bearing life while improving smoothness of operation.
3. Axial Guidance System

   The bearing incorporates an integrated axial guidance mechanism that prevents the outer ring from rotating relative to the inner assembly. This ensures precise alignment, reduces friction, and eliminates wear caused by ring slippage, making it ideal for applications with frequent start-stop cycles or oscillating movements.
4. Integrated Labyrinth Seals

   The labyrinth seals on both sides provide superior protection against contamination from dust, dirt, moisture, and other harmful particles while maintaining lubrication retention. This design reduces maintenance frequency and extends the bearing's service life even in harsh industrial environments.
5. High Load-Carrying Capacity

   Thanks to the double-row cylindrical roller design and thick-walled outer ring, the NUTR35-A can withstand extremely heavy radial loads, making it suitable for high-duty applications in material handling, machine tools, and construction equipment.
6. Relubrication Capability

   Despite being pre-lubricated at the factory with high-performance grease, the bearing is designed for relubrication to maintain optimal performance throughout its service life. This feature allows for adaptation to varying operating conditions and extends maintenance intervals.

Suffix Explanation

• NUTR: Core series code for yoke type track rollers with double-row cylindrical rollers, designed for heavy radial loads and moderate misalignment compensation.
• 35: Size code corresponding to a roller diameter of 35 mm, complying with international dimensional standards for the NUTR series.
• A: Indicates an improved crowned profile of the outer ring running surface, enhancing misalignment compensation capabilities compared to the standard version.

Typical Applications

• Material handling equipment (conveyor systems, roller tables, and lifting mechanisms)
• Machine tools (CNC machining centers, lathes, and milling machines)
• Printing and paper processing machinery
• Packaging equipment
• Textile machinery
• Agricultural machinery
• Construction equipment components (excavators, loaders, and cranes)
• Automation systems and robotics

Installation & Maintenance Notes

1. Ensure proper alignment between the bearing and the track to maximize the effectiveness of the crowned outer ring's misalignment compensation capability.
2. Use appropriate mounting tools to avoid damage to the seals or rolling elements during installation.
3. Maintain the recommended lubrication schedule, considering operating temperature, speed, and load conditions.
4. Regularly inspect the seals for signs of wear or damage, and replace them promptly if necessary to prevent contamination ingress.
5. Avoid excessive axial loads beyond the bearing's specified capacity, as this may cause premature wear or failure.