NUTR Yoke Type Cam Followers for Precision Motion Control Applications

1. Product Review & Introduction

The NUTR​ is a series of Yoke Type Cam Followers. These are specialized roller bearings designed to run on tracks, guideways, or cam surfaces. Unlike standard bearings that support a rotating shaft, track rollers are designed to carry heavy radial loads while rolling along an external surface, often in linear motion systems.

Key Characteristics:

• Type:​ Yoke Type Track Roller / Cam Follower

• Structure:​ Typically features a thick outer ring with a crowned (spherical) or cylindrical outer surface, and an inner ring with an integral stud (bolt) for mounting.

• Function:​ Converts cam motion into linear or oscillating mechanical motion, or provides support and guidance along a track.

2. Key Features

NUTR bearings are engineered for demanding applications where high load capacity and durability are critical.

• High Load Capacity:​ Designed to withstand heavy radial loads, making them suitable for supporting machinery weight or handling high-impact forces.

• Robust Construction:​ Features a thick outer ring that provides structural integrity and resistance to shock loads.

• Axial Guidance:​ Many models include flange rings or integrated features that provide axial guidance, preventing the bearing from slipping off the track.

• Sealed Options:​ Available with seals (e.g., 2RS) to protect against contaminants and retain lubrication, extending service life in harsh environments.

• Compact Design:​ Despite their strength, they maintain a relatively low cross-section, saving space in machinery assemblies.

• High Hardness:​ Made from high-carbon chromium bearing steel (e.g., GCr15) with a hardness of 60-64 HRC, ensuring excellent wear resistance.

3. Applications

NUTR track roller bearings are widely used in industries requiring precise linear motion or heavy-duty support.

• Automation & Robotics:​ Used in linear guides, conveyor systems, and pick-and-place mechanisms for smooth and precise movement.

• Machine Tools:​ Applied in tool changers, protective doors, and sliding covers where components need to move along a fixed path.

• Material Handling:​ Found in forklifts, lifting platforms, and telescopic arms to support and guide moving parts.

• Construction & Agricultural Machinery:​ Used in excavators, tractors, and other heavy equipment as hinge points or support rollers.

• Packaging Machinery:​ Utilized in the linear motion components of material handling and packaging lines.

4. Frequently Asked Questions (FAQ)

Q1: What is the difference between NUTR and a standard ball bearing?

A1: Standard ball bearings are designed to support a rotating shaft. NUTR bearings are track rollers designed to roll on an external surface (like a rail or cam) and carry the weight of the machine itself. They have a stud for mounting instead of a simple inner ring.

Q2: Are NUTR bearings pre-lubricated?

A2: Many models come pre-lubricated with grease for initial operation. They often include a lubrication hole in the inner ring for periodic re-lubrication to extend service life.

Q3: What is the typical operating temperature range?

A3: Standard models typically operate in a range of -20°C to +120°C. For higher temperatures, special lubricants or high-temperature variants may be required.

Q4: How do I install a NUTR bearing?

A4: Installation requires careful alignment. The stud (bolt) is typically inserted through a mounting hole and secured with a nut. It is crucial to use appropriate tools to avoid damaging the bearing and to ensure it is aligned perpendicular to the track surface.

Q5: What does the "A" suffix mean in models like NUTR 1747 A?

A5: The "A" often denotes a specific design variant, such as a different seal type, a crowned outer surface for better misalignment accommodation, or a specific internal clearance. Always refer to the manufacturer's datasheet for the exact specification.

Q6: Can they handle misalignment?

A6: Models with a crowned (spherical) outer surface can accommodate minor misalignments, which is a key advantage in track applications where perfect alignment is difficult to maintain.