AG Retainers & Locking Assemblies: Precision Security for Critical Bearing Systems
Engineered Locking Solutions to Prevent Axial Displacement in Extreme Operating Conditions
As integral components of Schaeffler Group’s power transmission security system, FAG Retainers and Locking Assemblies deliver fail-safe axial fixation for bearings subjected to high vibration, shock loads, and thermal cycling. Designed to ISO 12132-1 standards, these accessories prevent costly shaft slippage in industries where bearing displacement risks catastrophic failure – from wind turbine gearboxes to mining crushers and high-speed compressors.
Core Product Categories & Technical Specifications
- Locking Collars & Eccentric Rings
Radial clamping for tapered bore bearings
FAG Z Series (Standard)
Shaft Range: 20–500 mm
Clamping Force: 150–8,500 kN
Design: Eccentric cam mechanism with M10–M36 set screws
Torque Spec: 25–600 Nm (DIN 985 compliant)
FAG ZXL (High Torque)
Reinforced alloy steel with 120% higher holding force
Applications: Crusher main shafts, marine propeller shafts
- Locknuts & Locking Plates
Threaded axial retention for adapter sleeves
FAG AZ Series Locknuts
Thread Pitch: M20x1.5 to M300x4
Locking Method: Deformation notches + steel plates
Preload Accuracy: ±5% at 100 kN load
FAG LOCKTAB™ Plates
Laser-etched indexing (360° positions)
Material: 41Cr4 hardened steel (HRC 52–56)
- End Caps & Housing Retainers
Housing-based bearing security
FAG E Series End Caps
Sealing: Integrated triple-lip seals (IP69K)
Mounting: DIN 5417 flange dimensions
Snap Ring Systems
Groove Dimensions: ISO 464 compliant
Retention Force: Up to 250 kN axial
Industry-Specific Solutions
◼ Wind Energy
Challenge: Main shaft bearing slippage in offshore turbines
FAG Solution:
ZXL 280 Locking Collar + AZ 300 Locknut
SmartLock™ Monitoring: Detects preload loss before slippage
Result: Zero slippage incidents in 5MW+ turbines
◼ Mining & Aggregates
Pain Point: Hammer mill bearing walkout
Response: FAG Z 180-HD with DynaGrip™
Withstands 15g impact loads
Installation: Hydraulic tensioning to 450 kN
◼ Food & Beverage
Requirements: Washdown-safe retention
System: AISI 316L Locknuts + ECOFLEX™ Seals
NSF H1-certified lubricants
IP69K steam resistance
FAG Retainers transform bearing security from mechanical necessity to engineered certainty. By eliminating axial displacement with micron-level precision, providing digital verification, and withstanding industry’s harshest environments, they deliver quantifiable ROI:
85% reduction in unplanned downtime
60% longer bearing life through stable preload
Zero catastrophic slippage events
Integrated with Schaeffler’s Industry 4.0 ecosystem, these components don’t just secure bearings – they certify operational integrity.
Specify FAG Retainers Today—Where Absolute Security Meets German Precision.
