The NUKR product series is engineered for various industrial
sectors including manufacturing, automation, and precision
machining applications where reliability and performance are
critical.
NUKR/NUKRE series track rollers are widely used in various
mechanical systems that require linear or curved motion with heavy
loads. Typical applications include:
- Material Handling Equipment: Chain conveyors, roller conveyors, and lifting platforms, where
they support heavy loads during transportation.
- Automotive Manufacturing: Welding lines, stamping machines, and assembly lines, coping with
the heavy - duty and repetitive motion requirements.
- Packaging Machinery: Cam mechanisms, slat conveyors, and film - wrapping machines,
ensuring precise and stable motion control.
- Construction Machinery: Concrete mixers, crane booms, and excavator track systems,
enduring harsh working conditions and heavy loads.
- Textile & Printing Equipment: Textile machine guide rails and printing press rollers, providing
reliable support for high - precision motion.
- Agricultural Machinery: Harvester cutting platforms and tractor linkage mechanisms,
adapting to the variable load and vibration - prone working
environment.
FAQ
1. What are the main differences between NUKR and NUKRE series?
NUKR is a standard double - row full - complement cylindrical
roller track roller with two integral outer ring ribs. NUKRE adds
an eccentric sleeve on the core column, which is used for radial
position adjustment during installation to compensate for mounting
errors. If installation alignment is critical, NUKRE is the better
choice.
2. What is the maximum operating speed of these track rollers?
These are heavy - duty, low - to - medium - speed bearings.
Generally, the maximum rotational speed is 1500–3000 rpm, but it is
recommended to consult the manufacturer's catalog for specific
models. Exceeding the speed limit may cause overheating and shorten
the bearing life.
3. How to select between NUKR/NUKRE and other track roller series
(e.g., KR, PWKR)?
- Choose NUKR/NUKRE for heavy radial loads and the need for axial
guidance from outer ring ribs.
- KR series is suitable for light - to - medium loads with needle
rollers and cage assemblies.
- PWKR series has three outer ring ribs for applications requiring
higher axial load capacity.
4. What lubrication method is recommended?
Pre - lubricate with lithium - based grease before installation.
For continuous operation, re - lubricate regularly based on the
operating conditions (temperature, load, and speed). For high -
contamination environments, select sealed versions (e.g., 2RS) to
prevent dust and moisture from entering.
5. How to achieve precise adjustment with NUKRE's eccentric sleeve?
- Loosen the lock nut.
- Rotate the eccentric sleeve using a wrench to adjust the outer
ring's radial position (the adjustment range is usually ±0.5–1 mm,
depending on the model).
- Tighten the lock nut to the specified torque after adjustment to
ensure the position is fixed.
6. What factors affect the service life?
Key factors include: proper lubrication, correct installation
alignment, load within the rated range, operating temperature
(ideally - 20°C to +120°C), and effective sealing against
contamination. Improper use of any of these factors will
significantly reduce the service life.
