FKU115 Heavy‑Duty V‑Groove Guide Roller Bearing (No Bolt Shaft)The FKU115 is a high‑performance heavy‑load linear guide roller bearing designed as a direct replacement for NADELLA FKU115. Featuring a double row tapered roller structure and no bolt shaft design, it delivers exceptional radial and axial load capacity for heavy‑duty linear motion systems.
Brand: CNXM / High‑quality Chinese replacement
Type: V‑groove guide roller bearing (no bolt shaft)
Core Advantages:
No Bolt Shaft Design: Installed directly on a dedicated shaft, offering flexible mounting and compatibility with custom shafts.
Superior Load Capacity: Double row tapered roller design withstands heavy radial, axial, and impact loads in high‑speed linear motion systems.
Precision Alignment: Convex V‑groove outer ring reduces edge stress and compensates for minor track misalignment.
Durability: Blackened outer ring and GCr15 steel ensure excellent corrosion resistance and long service life in harsh industrial environments.
Interchangeability: Fully interchangeable with NADELLA FKU115 and compatible with RKU115 series (eccentric vs. concentric bolt).
Typical ApplicationsIdeal for heavy‑duty linear motion systems including:
Gantry machining centers, heavy machine tools, and rolling mills
Automated production lines, heavy conveyors, and robotic walking mechanisms
Metallurgical, mining, port machinery, and precision industrial equipment
High‑precision linear guide systems requiring heavy load support
This FKU115 bearing combines NADELLA‑equivalent performance with cost‑effective replacement options, making it the preferred choice for demanding heavy‑load linear guidance applications.
Parameters Values | Description
Outer Diameter De:115mm | Maximum outer ring diameter
Inner Diameter d: 35mm | Inner ring bore diameter (compatible shaft diameter)
Total Width T: 33.5mm | Overall bearing thickness
Inner Ring Width m: 36mm | Inner ring axial width
Outer Ring Width B: 72mm | Outer ring axial width
Mounting Surface Width A: 60mm / 63mm | 60mm (standard) / 63mm (stainless steel NX version)
Flange Width F: 52mm | Inner ring flange width
Pin Hole Diameter d2: 4mm | Anti-rotation pin hole
V-groove Curvature R 400 | Outer ring V-groove convex surface radius
