Product page
Cam follower NTN KR30LL/3AS
- Manufacturer Part Number
- KR30LL/3AS
- Brand
- NTNOfficial distributor
- Category
- Bearings
- Subcategory
- Cam follower and support roller
- Series
- KR
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Description
NTN KR30LL/3AS is a cam follower reference, within Bearings. Request a quote for KR30LL/3AS via WhatsApp or email with the quantity you need; we respond promptly with lead time and equivalents.
The NTN KR series cam follower is a roller bearing with a threaded stud, designed to be mounted directly on cams, linear guides or raceways. It is used in lifting mechanisms, conveyors and cam systems where high radial load capacity and rigidity are required. Its robust construction and LL sealing make it suitable for dusty environments and permanent lubrication. MR Accesorios Industriales sells this series in Buenos Aires, Argentina, with more than 80 years of experience in bearings and power transmission.
The KR series designation is read as follows: the letters KR identify a cam follower with a threaded stud. The number that follows indicates the outside diameter in millimeters; for example, KR30 corresponds to a roller with a 30 mm outside diameter. The LL suffix indicates that the bearing incorporates double-lip contact seals, and /3AS refers to a special design with a threaded stud and nut. Thus, a KR40LL/3AS is a roller with a 40 mm outside diameter, sealed, with a stud and nut for mounting.
These rollers are used in actuating cams, raceway guides, chain conveyors, packaging machines, lifting equipment and positioning systems. In Argentine industry they are found in automotive production lines, food plants, road machinery and metallurgical equipment. Their ability to withstand radial loads and tilting moments makes them ideal for mechanisms where space is limited and a robust, long-lasting support is needed.
To correctly select a KR cam follower, take into account the required outside diameter, the type of sealing (LL for contaminated environments), the stud thread and the recommended tightening torque. Mounting must ensure precise alignment with the raceway; excessive misalignment shortens service life. Lubrication is permanent in most sealed versions, but in severe applications relubrication through the stud may be required. Check concentricity and axial clearance according to the use.
Regarding equivalences, NTN KR cam followers are interchangeable with those of other brands that follow the same international nomenclature, such as SKF, INA or NSK, as long as dimensions and design match. When requesting a quote, provide the complete part number (for example, KR32LL/3AS) to ensure compatibility. If you are replacing a worn part, compare outside diameter, width, thread and type of sealing before installing.
To request a quote for NTN KR series cam followers, write to us on WhatsApp with the part number or the dimension you need. At MR Accesorios Industriales we will send you the quote promptly and advise you so you choose the right design for your application.
This description provides guidance on the product type. Check the configuration and dimensions of this reference.
Dimensions
Dimensions and tolerances: Send us the part number via WhatsApp and we'll confirm dimensions, sealing, and internal clearance against the manufacturer's data sheet.
Frequently Asked Questions
- What does the LL suffix mean in KR rollers?
- The LL suffix indicates that the roller incorporates double-lip contact seals, which protect against dust ingress and retain lubrication. It is the recommended design for contaminated environments or where particles are present.
- How do I choose the right KR roller for my machine?
- You need to define the outside diameter, the width, the type of stud thread and the sealing. If you have the part number of the original part, send it on WhatsApp and we will quote the exact reference.
- Are NTN KR rollers compatible with other brands?
- Yes, they follow an international nomenclature that allows interchangeability with cam followers from other brands, as long as dimensions, thread and design match. Verify those data before replacing.

