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Track Rollers (KR Series)

Cam Followers and Track Rollers (also referred to as track needle roller bearings or stud/yoke type rollers) are heavy-duty, thick-walled rolling bearings engineered to roll directly along all types of tracks, cams, linear guides, and conveyor rails. Unlike standard thin-walled bearings, these units feature a thick outer ring designed to withstand high radial deformation, extreme bending stresses, and heavy cyclic dynamic shock loads.

Classification :

Cam Followers Track Rollers

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hlbearing@hlgq-steelball.com

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Product Overview

They are primarily available in two structural configurations:

Stud Type Cam Followers (KR / CF / NUKR Series): Feature a solid, high-strength threaded stud replacing the inner ring, allowing for quick cantilever mounting onto machinery frames or levers using a hexagonal socket or screwdriver slot.

Yoke Type Track Rollers (NATR / NUTR / RNA Series): Feature a conventional inner ring designed for pin-clevis mounting between double-sided supporting yoke arms.

Manufactured from high-purity GCr15 Chrome Steel or case-hardened alloy steel, they feature crowned or cylindrical outer ring profile surfaces to prevent edge loading under track deflection. They are widely specified in automated packaging lines, cam-driven indexing mechanisms, transfer equipment, CNC tool changers, bottling plants, and material handling systems.

Key Features & Advantages

Thick-Walled Outer Ring Design: Specially reinforced outer ring resists severe radial impact loads, track bending stresses, and fatigue failure caused by direct rolling contact.

Crowned & Cylindrical Outer Surface Options:

Crowned Outer Surface: Minimizes edge stress concentrations caused by shaft misalignment or angular tracking tilt.

Cylindrical Outer Surface: Provides maximum contact area for heavy loads on wide, flat guide rails.

Convenient Cantilever Threaded Stud Assembly: Stud-type followers feature precision-machined threads and an integrated hex socket/slot, making installation into blind holes or lever arms fast and reliable.

High Radial Load Capacity with Compact Cross-Section: Utilizes full complement needle rollers or cylindrical roller assemblies to maximize load-carrying capacity within a restricted radial envelope.

Integrated Sealing & Relubrication Paths: Equipped with synthetic contact seals (PP / 2RS) or labyrinth steel shields, along with internal grease ducts and lubrication holes on the stud ends for easy field maintenance.

Stud Type Cam Followers (KR / CF Series)

Model No. (Standard / Sealed)	Outer Dia (D) [mm]	Stud Dia (d1) [mm]	Stud Length (B2) [mm]	Thread Spec (G)	Max Clamping Torque [N·m]	Dynamic Load (Cr) [kN]
KR 16 / KR 16 PP	16	6	28	M6 × 1.0	3	3.65
KR 19 / KR 19 PP	19	8	32	M8 × 1.25	8	4.25
KR 22 / KR 22 PP	22	10	36	M10 × 1.25	15	6.1
KR 26 / KR 26 PP	26	10	36	M10 × 1.25	15	7.2
KR 30 / KR 30 PP	30	12	40	M12 × 1.5	22	9.8
KR 35 / KR 35 PP	35	16	52	M16 × 1.5	58	13.2
KR 40 / KR 40 PP	40	18	58	M18 × 1.5	87	16.8
KR 52 / KR 52 PP	52	20	66	M20 × 1.5	120	24.5
KR 62 / KR 62 PP	62	24	80	M24 × 1.5	210	31

Yoke Type Track Rollers (NATR / NUTR Series)

Model No.	Bore (d) [mm]	Outer Dia (D) [mm]	Total Width (B) [mm]	Internal Roller Type	Dynamic Load (Cr) [kN]	Static Load (C0r) [kN]
NATR 5 / NATR 5 PP	5	16	12	Caged Needle Rollers	3.8	4.25
NATR 10 / NATR 10 PP	10	30	15	Caged Needle Rollers	8.2	10.5
NATR 15 / NATR 15 PP	15	35	19	Caged Needle Rollers	11.5	15.8
NUTR 15 42	15	42	19	Full Complement Cylindrical	23.5	27
NUTR 20 52	20	52	25	Full Complement Cylindrical	38	45.5
NUTR 25 62	25	62	25	Full Complement Cylindrical	44.5	55

FACTORY WORKSHOP

We continually invest in research and development to enhance our product offerings and manufacturing processes. Our goal is to maintain our position as a leader in the industry while embracing new technologies and trends that shape the future of metal production.

Factory workshop

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Cam Followers Track Rollers