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HPCE series eccentric stud rollers offer superior radial load capacity and reliable sealed lubrication.

The precision-designed eccentric studs allow for quick and accurate centering, effectively compensating for installation errors, eliminating track clearance, and maintaining optimal preload, resulting in stable and smooth rolling performance.

They are widely used in automated production lines, conveyor rails, sliding doors, machine tool guides, cam mechanisms, indexing tables, packaging, printing and textile machinery, heavy-duty driven booms, construction machinery, metallurgical equipment, and automated warehouses.

RKU95 tapered roller guide roller, replacement for Nadella RKU95. Designed for heavy-duty linear guide systems, automation machinery and industrial equipment. Features high load capacity, strong rigidity, stable operation and long service life. Factory direct supply with large stock, fast delivery and reliable quality. Welcome inquiries for samples and bulk orders.

Models: RKU 95 (concentric), RKUR 95 (eccentric with “R” suffix for clearance adjustment).

Type: Solid guide roller with built-in tapered roller bearing, designed for GU series heavy-duty guide rails.

Material: Steel roller body.

Seal: Equipped with dustproof seals and lifetime lubrication.

Specifications

• Outer diameter D: 95 mm
• Bore / Shaft diameter d: 38 mm
• Mounting thread: M36×1.5
• Overall width: 115 mm
• Roller width: 53 mm
• Weight: 2.8 kg

Other Related Models

RKU55, RKU65, RKU75, RKU95,RKU115

RKUR55, RKUR65, RKUR75, RKUR95,RKUR115

NADELLA Type Linear Guide Roller Bearing 
Changzhou Xuanmao Bearing

We supply heavy‑duty linear guide rollers interchangeable with NADELLA RKU75, RKUR75, RKU95, RKUR95, RKU115, RKUR115 (Heavy‑Line System). These are concentric / eccentric locating guide rollers built with tapered roller bearings, convex raceway (radius R=400), double‑sided sealed, for heavy linear motion systems.

Structure: Guide roller + tapered roller bearing
Type:RKU: concentric (fixed center)    RKUR: eccentric (adjustable center)
Rolling way: convex profile, side radius R=400
Seal: double‑sided rubber seal, dust‑proof & water‑resistant
Material: high‑carbon chromium bearing steel, hardened & ground
Load capacity (reference): RKU75: dynamic 69 kN RKU95: dynamic 134 kN RKU115: dynamic 190 kN
Operating temperature: −20°C to +80°C
Shaft speed: up to 4 m/s (heavy‑duty working condition)
Operating Environment: Suitable for heavy loads, high rigidity, harsh environments:
Heavy automation lines, automated storage & retrieval systems (AS/RS),stackers, lifting equipment, logistic conveyors
Machine tools, metallurgical machinery, foundry equipment
Long working life, low maintenance, strong shock resistance
Our Service
Xuanmao own brand with stable quality & competitive price
OEM / ODM manufacturing accept drawings, samples, custom branding
Interchangeable with NADELLA dimensions, ready for assembly
Full sizes in stock: RKU75, RKUR75, RKU95, RKUR95, RKU115, RKUR115

The FKU series was originally developed by Nadella (an Italian expert in heavy-duty linear motion and roller bearings) as a line of heavy-duty tapered roller track bearings. These bearings are designed for high load capacity, high precision, and long service life, and are widely used in metallurgy, logistics, heavy machinery, and other industrial sectors. Changzhou XuanMao Bearings currently produces alternative products. CNXM Brand.

Core Positioning and Structure

- Brand: CNXM, a professional manufacturer of heavy-duty linear motion bearings and roller bearings.

- Type: Tapered roller raceway bearing with a convex outer ring raceway (R=400mm), suitable for heavy-duty, impact, and eccentric load conditions.

Structural Features:

- Double row or full complement roller bearings, providing high radial and axial load capacity and capable of withstanding overturning moments.

- Inner ring with cylindrical bore or internal thread, compatible with bolted shafts (e.g., RKUR, RKU series).

Product Models:

FKU55   FKU65   FKU75   FKU95   FKU115

RKU55   RKU65   RKU75  RKU95   RKU115

RKUR55   RKUR65   RKUR75  RKUR95   RKUR115

PK62C is a heavy‑duty PK series track roller bearing with double‑row roller design, high radial load capacity and good anti‑overturning performance. It features keyway structure, reliable sealing and high‑strength bearing steel material, widely used in automated production lines, CNC machinery, truss robots and heavy industrial conveying equipment.

• Model: PK62C
• Structure: Double-row roller type, heavy-duty track roller
• Bore (d): 27 mm
• Outer Diameter (D): 62 mm
• Overall Length (L): 83 mm
• Material: High-hardness bearing steel (GCr15)
• Design: Concentric shaft with keyway, sealed for dust and contamination protection
• Features: High radial load capacity, impact resistant, anti-overturning, stable performance
• Application: Automation lines, CNC machines, truss robots, conveying systems, heavy industrial equipment

RKY/RKYR & RKX/RKXR Series Track Rollers are engineered with double-row tapered roller bearings for exceptional load capacity and precision guidance. Designed for heavy-duty industrial applications such as metallurgy, port logistics, and automation systems, these rollers feature robust NBR seals and come in sizes ranging from RKY52 to RKX110. Reliable, high-precision components for critical linear motion needs.

RKY Series rollers are 40°,RKX Series rollers are 45°.

Product Model:

RKY52  RKYR 52
RKY62  RKYR62
RKY72  RKYR 72
RKX90C     RKXR 90C
RKX110C   RKXR 110C

PK Series Track Rollers are heavy-duty roller bearings widely used in linear motion systems, originally standardized by NADELLA. They adopt a double-row roller structure with strong radial load capacity, impact resistance and anti-overturning performance. Available in concentric (PK) and eccentric (PKR) versions, these track rollers are equipped with keyways, seals and high-hardness bearing steel construction, suitable for heavy machinery, automated production lines, CNC equipment and logistics conveying systems. They feature stable operation, reliable sealing and long service life under harsh industrial conditions.

Product Models:

PK52C     PKR 52C
PK62C     PKR62C
PK72C     PKR 72C
PK90C     PKR90C
PK110C   PKR110C

PKR62C is a heavy-line guide roller (eccentric type), which corresponds to the Danieli spare part number 0.249830.V. Both refer to the same high-precision industrial component used in linear guidance and metallurgical machinery.

Main Dimensions (mm)：
Outside Diameter (De): 62 mm
Outer Ring Width (A): 37 mm
Total Length (L): 83 mm
Stud Thread (M): M24 x 1.5
Thread Length (G): 25 mm
Housing Bore Diameter (d1): 27 mm (Tolerance H7 recommended)
Eccentricity (e): 1.5 mm (For fine-tuning clearance)

Load Capacities & Performance：
Dynamic Load (Cw): 48,000 N (Based on 100 km life)
Static Load (C0w): 67,000 N
Radial Load Limit (Fr): 22,100 N (Max. permissible load on the stud)
Tightening Torque: 160 Nm (For non-lubricated threads)
Approx. Weight: 1.25 kg

Key Technical Features：
Eccentric Stud: Allows for precise adjustment of the roller against the guide rail to eliminate system play/clearance.
Heavy-Line Design: Engineered with high-strength steel and optimized internal geometry to handle high radial and axial loads.
Sealing System: Equipped with high-performance contact seals to protect against dust, scale, and moisture in harsh environments.
Re-lubrication: Features a lubrication hole on the stud head for easy maintenance and extended service life.

Typical Applications：
Primarily used in Danieli steel mill machinery, including:
Continuous Casting Machines (CCM) guide segments.
Straightening and leveling machines.
Heavy-duty linear motion systems in metallurgical plants.