Products Categories

W2/W3/W4 Series V-Groove Track Roller Bearing Guide Wheel, 90° double V-profile design, fits internal/external V-track, round shaft & angle iron. High precision, low friction, heavy load capacity, with metal shields/seals, optional stainless steel for harsh environments, ideal for linear motion systems.

W2  W2X  W2SSX
W3  W3X  W3SSX
W4  W4X  W4SSX  W4XL  W4XXL

Suffix Logic:

▸ W2/W3/W4: Snap groove only, snap ring extra

▸ W2X/W3X/W4X: W/ carbon steel snap ring, general industrial use

▸ W2SSX/W3SSX/W4SSX: W/ 304/316 stainless steel snap ring, corrosion resistant for outdoor/water-wash/chemical use

ZKLN features concentric outer ring, positioned with housing & end cap for high precision/stiffness (spindles, precision worktables), stable datum after installation.

ZKLF has eccentric outer ring with bolt holes, direct mounting without housing/end cap for modular quick assembly (automation units, simple ball screw support).

Both with 60° contact angle, bidirectional load, P4/P6 precision, XL for higher load/life; 2Z for high speed, 2RS for wet/dusty conditions, same speed/friction performance.

Select ZKLN for high precision/stiffness, ZKLF for fast assembly/cost-saving.

ZKLN1034   ZKLN1242   ZKLN1545   ZKLN1747   ZKLN2052
ZKLN2557   ZKLN3062   ZKLN3572   ZKLN4075   ZKLN5090
ZKLN60110   ZKLN70120   7KLN80130   ZKLN90150   ZKLN100160
ZKLF1255   ZKLF1560   ZKLF1762   ZKLF2068   ZKLF2575
ZKLF30100   ZKLF3080   ZKLF3590   ZKLF40115   ZKLF40100
ZKLF50140   ZKLF50115   ZKLF60145   ZKLF70155   ZKLF80165
ZKLF90190  ZKLF100200

LR5···KDD、3057...、3067...、LR5...KDDU、LR5···NPPU、3058···、3068...Double Row Angular Track Wheel

KDD: Double-sided metal shield, non-contact type. Suitable for high-speed, dry environments with low friction and high allowable speed, medium dust-proof performance

NPP: Double-sided rubber seal (equivalent to standard 2RS), contact type seal. Excellent dust and moisture resistance, ideal for wet and dusty working conditions. Slightly higher friction and slightly lower allowable speed than KDD.

Suffix U = Eccentric pivot design. The clearance between roller and track can be adjusted by rotating the pivot during installation to optimize preload and compensate for installation errors.

No suffix U = Concentric pivot with fixed dimensions. No adjustment required after installation, suitable for scenarios requiring high positioning accuracy and stable working conditions.

选型速览 | Quick Selection Guide

LFR series U groove yoke type track roller linear motion bearings are premium linear transmission components specially designed for cylindrical tracks, featuring internal double row angular contact ball bearing structure and thick-walled outer ring to deliver excellent high load capacity.

Adopted advanced Gothic arch outer ring profile, they form dual 60° contact points with tracks, ensuring ultra-low friction resistance, high allowable speed, stable load distribution and long service life, effectively avoiding stress concentration and edge effect.

Equipped with KDD metal shield or NPP rubber seal for reliable dust prevention, these rollers support optional concentric/eccentric pivot for easy installation and preload adjustment, and corrosion-resistant stainless steel material is available for special working conditions.

With superior radial runout accuracy and smooth working surface, they realize ultra-quiet, high-precision and stable operation, ideal for various linear motion transmission systems in industrial machinery, automation equipment and precision devices.

LFR5200-8 KDD,LFR 5300-15 KDD

LFR 5201-12 KDD,LFR5201-12 NPP,LFR 5201-14 KDD,LFR5201-14 NPP,LFR5201-10.40 KDD,LFR 5201 KDD

LFR 5301 KDD,LFR5301-20 NPP,LFR 5302 KDD,LFR 5302 NPP

1. Load Capacity & Dimensions (Core Differences)
   • 4200 Series (Light Series): Boasts a relatively compact cross-section. With the same inner diameter, its outer diameter and width are generally smaller than those of the 4300 series, leading to a lower load rating. It is ideally suited for applications with space constraints where single row bearings fail to meet load requirements.
   • 4300 Series (Medium Series): Features a larger cross-section and wider design. This enables it to withstand heavier radial loads and bidirectional axial loads compared to the 4200 series.

3800, 3900, 3000 series double row angular contact ball bearings feature thin & ultra-thin structure, high limiting speed (rpm), compatible with grease and oil lubrication. Excellent rigidity, stable axial & radial load capacity, ideal for precision machinery, motors and high-speed spindles with reliable performance and full specifications.

Our 32 & 33S series angular contact ball bearings feature premium S-type iron (new/old code available) and U-type iron retainer, with excellent rigidity, high-speed performance and stable load-bearing capacity. Precision engineered for industrial machinery, motors and transmission systems, reliable quality, complete specifications, customizable as required.

Our 5200, 5300, 3200A and 3300A series double-row angular contact bearings are engineered for superior performance and long-term reliability, designed to meet the rigorous demands of industrial applications.
Featuring a compact double-row structure, these bearings excel at withstanding combined radial and axial loads in both directions, delivering exceptional rigidity and stability even under high-speed rotation and heavy-duty working conditions. With high machining precision, low friction, and ultra-low noise operation, they effectively reduce equipment wear and energy consumption, extending the overall service life of your machinery.
Available in standard specifications with excellent interchangeability, our double row angular contact bearings are widely applied in precision machine tools, electric motors, reducers, automotive parts, and various transmission systems. Strict quality control throughout the production process ensures consistent performance and dimensional accuracy, fully complying with international industry standards.
We offer customized solutions for special working conditions such as high temperature, corrosion resistance and heavy load, to perfectly match your diverse application requirements.

Our premium Radial Needle Roller and Cage Assemblies feature high-precision needle rollers and sturdy cage structures, designed for compact radial load applications with excellent rotational accuracy and load-bearing capacity. Available in standard & custom non-standard specifications, with options like TN plastic cages (max operating temp 120℃). Ideal for industrial machinery, gearboxes and precision equipment, ensuring stable performance and long service life.

• Guide Rails: Manufactured from cold-drawn steel with V-shaped profile. Raceways are induction hardened and ground to guarantee high precision and extended lifetime.

• Sliders: Accommodate ball or tapered roller bearings for high-load capacity. The housing geometry offers inherent protection, making them suitable for contaminated environments.

• Configurations: Available in multiple designs and materials, including stainless steel options.

• System Integration: Guide rails can be furnished with an integrated rack and pinion, providing a compact, complete drive system.

XM-RKY52 is a heavy‑duty V‑groove guide roller bearing (concentric type) with a 52mm outer diameter, designed for high‑load linear motion systems.

Built with double‑row tapered rollers and a thick‑walled outer ring, it delivers exceptional radial and axial load capacity, shock resistance, and long service life in harsh environments. Equipped with dual rubber seals (2RS) and pre‑lubricated, it suits dusty, oily, or high‑vibration conditions.

Widely applied in automated logistics (stackers, AGVs), packaging machinery, CNC machine tools, truss robots, and woodworking/glass processing lines, it ensures precise guiding and stable rolling for heavy‑duty linear conveying and positioning systems.

RKY52,RKYR52,RKY62,RKYR62,RKY72,RKYR72,RKX90C,RKXR90C,RKX110C,RKXR110C  (RKY is 80°，RKX is 90°）