Original 3082415 Retaining Ring Is Suitable For Cummins QSK60 NT855 Diesel Engine

The Cummins 3082415 retaining ring functions as a mission-critical axial retention device in high-stress diesel engine environments. Engineered to exceed OEM performance benchmarks, it delivers:

Ultra-Precise Load Distribution: Transmits dynamic loads up to 12,000 N (2,695 lbf) while maintaining <0.05mm radial runout in QSK60 camshaft bearing applications.

Vibration Attenuation: Reduces component micro-motion by 67% vs. standard rings through optimized spring steel geometry (ISO 16528 compliance).

Thermal Stability: Maintains clamping force integrity across -40°C to +200°C operating range (validated per ASTM E831).

Strategic Applications:

QSK60 Mining & Marine: Critical for Caterpillar 797F (tier 4 final) haul trucks & MTU marine propulsion conversions.

NT855 Industrial Power: Secures oil cooler cores in 500kVA generator sets and John Deere 9R/RT series tractors.

 Core Material: SAE 1070 (UNS G10700) spring steel with triple-stage quenching for 1,200 MPa UTS and >10⁷ cycle fatigue life (per DIN 50100).

 Surface Enhancement:

Black Oxide (MIL-DTL-13924D): 8-10μm coating thickness provides 500hr salt spray resistance.

Micro-Peening (SAE J443): Generates 650 MPa compressive surface stress for crack propagation resistance.

Precision Dimensions

Parameter Value Tolerance Measurement Standard

Outer Diameter 75.00 mm ±0.015 mm ASME B46.1

Groove Width 5.00 mm +0/-0.03 mm ISO 286-2

Radial Thickness 1.52 mm ±0.01 mm DIN 1543

Performance Ratings

Static Load Capacity: 15 kN (3,372 lbf)

Dynamic Load (Rated RPM):

12 kN @ 2,100 RPM (NT855 oil cooler)

9.8 kN @ 3,800 RPM (QSK60 valve train)

Asymmetric Taper Profile: 15° installation angle reduces insertion force by 40% vs. conventional rings.

Laser-Engraved Trace Code: Permanent QR marking (Cummins PACT™ system) for counterfeit prevention.

Anti-Walk Notches: 3 precision-stamped detents prevent rotational creep in high-torsion applications.

Certified Compatibility

QSK60 Series: Validated with bearing retainers 3082416 (camshaft) and 4921445 (turbocharger shaft).

NT855 Models: Direct replacement for obsolete P/N 3006745 in Stage V emission-compliant engines.

1. Surface Prep: Degrease with Cummins ES Compleat™ Cleaner (P/N 4922474) to Sa 2.5 cleanliness.

2. Force-Calibrated Tooling:

Use KUKA KR 6 R700 six-axis robot or equivalent with 2 kN force feedback.

Target seating depth: 4.85 mm ±0.05 (verify with Mitutoyo 543-790B depth micrometer).

Predictive Maintenance

Vibration Analysis: Replace if FFT spectrum shows >4g acceleration at 2× harmonic frequency.

Wear Thresholds:

Maximum groove deformation: 0.08 mm (per Cummins TSB 3812037)

Replacement interval: 2,500 hrs (mining) / 5,000 hrs (power generation)