INA KR30-X-PP-A-NMT – Cam Follower with Needle Rollers, Cylindrical Running Surface

General Information

• Brand: INA
• Item Number: KR30-X-PP-A-NMT
• Manufacturer Part Number: 0055918640078
• EAN: 4054362445920
• Category: Cam Follower / Stud Type Track Roller
• Country of Origin: Germany

Dimensions & Weight

• Stud Diameter (d): 12 mm / 0.4724 in
• Outer Diameter (D): 30 mm / 1.1811 in
• Roller Width (B): 14 mm / 0.5512 in
• Stud Length (B, from datasheet): 40 mm
• Weight: 0.095 kg

Product Properties

• Running Surface: Cylindrical (X suffix)
• Sealing: PP – Lip seals on both sides
• P-type: two zinc-plated sheet steel washers with intermediate NBR element
• Axially preloaded sealing lip, temperature range approx. –30 °C to +100 °C
• Mounting Method: Threaded stud with hexagon nut (NMT)
• Eccentric Ring: None (other mounting method, no eccentric collar)
• Rolling Elements: Needle rollers with cage
• Relubrication: Possible via grease nipple (stud type track roller design)

Technical Data (Schaeffler / Medias)

• Stud fit diameter (d1): 12 mm
• Stud width (B): 40 mm
• Basic Dynamic Load Rating, Radial (Crw): 6,800 N
• Basic Static Load Rating, Radial (C0r): 8,700 N
• Permissible Speed with Permanent Grease (nDG): 5,500 rpm
• ECLASS: 23-05-15-02

Suffix Description

• X: Cylindrical running surface
• PP: Lip seals on both sides (P-type axial sealing washers with NBR element)
• A: Design modification (can be used as standard)
• NMT: Supplied with hexagon nut

Product Description

The INA KR30-X-PP-A-NMT is a sealed cam follower with needle rollers, designed for high load capacity in a compact form. It features a thick-walled outer ring and a cylindrical running surface, making it suitable for use on flat or profiled tracks under high radial loads.

Instead of an inner ring, the bearing uses a solid threaded stud, allowing for simple installation using the included hexagon nut. The internal needle rollers are guided by a cage, which:

• Prevents direct contact between rolling elements
• Reduces friction compared to full-complement cam followers
• Allows higher speeds and reduced heat generation

The PP lip seals on both sides protect the internal components from contamination and help retain grease, increasing service life in demanding environments.

Typical Applications

• Conveyor systems and material handling
• Linear guidance systems
• Cam and follower mechanisms
• Automation and packaging machinery
• General industrial track and guide systems

   PACKAGE INCLUDES: ONE (1) INA Cam Follower KM30 X PPA NMT