As core components of the Schaeffler Group’s power transmission portfolio, FAG Insert Ball Bearings and Belt Tension Pulleys deliver unmatched reliability in applications requiring compact design, precise belt control, and maintenance-free operation. Engineered to work synergistically, this system ensures optimal power transfer in agricultural, automotive, and industrial machinery. This guide explores their technical specifications, engineering innovations, and joint benefits for maximizing drive efficiency.

Product Categories & Technical Specifications

1. FAG Insert Ball Bearings (Y-Bearings)

Self-aligning units combining bearing, housing, and sealing in a single assembly.

Key Series

FAG YEL 2 Series (Eccentric Locking Collar)

Locking Mechanism: Eccentric collar secures bearing to shaft with 600 Nm holding torque.

Misalignment Compensation: ±3° via spherical outer surface.

Dimensions: Bore 12–100 mm, housing diameters 28–215 mm (e.g., YET204-012).

Sealing: Triple-lip FAG X-Seal (IP69K) for dust/water resistance.

FAG YES 2 Series (Set Screw Locking)

Mounting: Set screws with anti-loosening coating for shafts ≤50 mm.

Material: Gray cast iron housing; 100Cr6 bearing steel (HRC 60–64).

Load Capacity: Dynamic radial load 25 kN (YES206-030).

Specialty Variants

Stainless Steel (W Series): AISI 440C bearing + 316L housing for food/pharma.

High-Temperature (HT): Operates at –40°C to +200°C with FAG Arcanol L255 grease.

2. FAG Belt Tension Pulleys

Precision-engineered to maintain optimal belt tension and dampen vibrations.

Key Types

Spring-Loaded Tensioners

Damping Mechanism: Torsion springs with 15–80 N/mm stiffness range.

Rotation Angle: ±25° for dynamic tension adjustment.

Bearing Integration: Pre-installed FAG Insert Bearing (e.g., YAR206-012).

Fixed Guide Pulleys

Design: Rigid mounting with pre-greased FAG bearing.

Surface Treatment: Anodized aluminum pulley wheels reduce belt wear by 30%.

Temperature Range: –30°C to +150°C continuous operation.

Hydraulic/Auto-Adjust Tensioners

Technology: Pneumatic or hydraulic piston for real-time belt tension control.

Applications: Automotive serpentine belts, combine harvesters.

FAG Insert Ball Bearings and Belt Tension Pulleys represent a holistic approach to power transmission, transforming drive systems into models of efficiency and resilience. From withstanding grain dust in combine harvesters to ensuring millimeter-perfect timing in automotive robots, this integrated solution delivers measurable ROI through extended component life, energy savings, and predictive maintenance capabilities. Backed by Schaeffler’s engineering legacy and global support network, FAG empowers industries to achieve unprecedented uptime while advancing sustainability goals.