INA Drawn Cup Roller Clutch with Integrated Bearing Arrangement represents Schaeffler Group’s pinnacle of mechanical integration, combining a freewheeling roller clutch and a needle roller bearing within a single cold-formed steel housing. This engineered assembly enables efficient torque transmission in one direction while providing robust radial shaft support, eliminating the need for separate components and reducing installation complexity in automotive, industrial, and robotics systems.

Core Engineering & Operating Principle

Integrated Component Architecture:

Drawn Steel Cup:

Cold-formed outer shell (1.5–3.0 mm wall thickness)

Precision tolerance: H7 housing fit | Surface hardness: 500–700 HV

Roller Clutch Module:

Spring-loaded cylindrical rollers + hardened wedge ramps

Engagement: Rollers jam between ramp/shaft when input rotates clockwise

Overrun: Rollers retract, allowing output to spin freely counter-clockwise

Needle Roller Bearing:

Caged full-complement needle rollers (ISO Class 4 accuracy)

Radial load capacity: Up to 85 kN dynamic (e.g., HFL 2030 series)

Material & Manufacturing Excellence

Component-Level Engineering:

Cup Material: DC04/DC05 cold-rolled steel | Zinc-nickel coated (ESKATEC 520D)

Rollers: 100Cr6 bearing steel | Hardness: 60–64 HRC | Super-finished (Ra ≤ 0.1 μm)

Cage: Glass-fiber reinforced PA66 (TVP) | Temperature stable to 120°C

Proprietary Processes:

Precision Stamping: Cup formed in 5-stage progressive die (±0.05 mm tolerance)

Laser Welding: Hermetic sealing of clutch/bearing modules (AWS D17.1 compliant)

Micro-Ground Ramps: 15°–25° wedge angle optimized for zero-slip engagement

Critical Application Sectors

Automotive & E-Mobility:

Starter Motors: Overrunning crankshaft drive (HFL 1425: 250 N·m torque)

EV Transmission Park Lock: Bidirectional locking prevention

HVAC Blowers: Freewheeling during engine idle

Industrial Automation:

Conveyor Indexing Drives: Unidirectional power transmission + radial support

Robotic Wrist Assemblies: Compact torque transfer in 6-axis arms

Consumer & Medical:

Power Tool Gearboxes: Hammer drill clutch/bearing combos

Surgical Robot Drives: Sterilizable (IPX9K) sealed units

Why INA Dominates Integrated Clutch-Bearing Market

Patented Ramp Geometry: Zero-backlash engagement < 3° rotation

X-life Rating: 30% higher torque capacity vs. competitors

Digital Twin Validation: Simulate 10M+ cycles in Bearinx® software

IATF 16949 Certified: Automotive-grade PPAP documentation

Global Logistics: 48-hour delivery for 200+ standard sizes

Innovation Spotlight:

Hybrid Ceramic Rollers: For EV applications (electrical insulation)

Smart Clutches: Embedded torque sensors with CANbus output

Conclusion: The Ultimate Compact Drive Solution

INA Drawn Cup Roller Clutch with Bearing Arrangement revolutionizes power transmission design by integrating critical functions into a single hardened steel envelope. This solution delivers:

50% space savings vs. discrete clutch/bearing assemblies

Zero-maintenance operation with lifetime-lubricated seals

Fail-safe overrunning with precision-engineered roller dynamics

Drop-in manufacturability reducing assembly labor by 70%