Insert Ball Bearings and Belt Tension Pulleys

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.

  1. 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.

MORE +
CLOSE +
Product d D B Mass
UC204
20mm
47mm
31mm
0.157 kg
UK207
30mm
72mm
29mm
0.54 kg
UC205-13
20.638mm
52mm
34.1mm
0.24 kg
UK208
35mm
80mm
31mm
0.7 kg
UC205-14
22.225mm
52mm
34.1mm
0.215 kg
UK209
40mm
85mm
32mm
0.83 kg
UK210
45mm
90mm
34mm
0.98 kg
UK211
50mm
100mm
36mm
1.24 kg
UK212
55mm
110mm
40mm
1.58 kg
UK213
60mm
120mm
41mm
1.88 kg
UC201
12mm
47mm
31mm
193 g
UC201-08
12.7mm
47mm
31mm
0.2 kg
UC202-09
14.288mm
47mm
31mm
0.19 kg
UC202
15mm
47mm
31mm
0.188 kg
UC202-10
15.875mm
47mm
31mm
0.171 kg
UC203
17mm
47mm
31mm
0.185 kg
UC203-11
17.463mm
47mm
31mm
170 g
UK205
20mm
52mm
23mm
0.25 kg
UC204-12
19.05mm
47mm
31mm
152 g