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Induction-Hardened Cummins Camshafts for ISX15, NT855 & KTA Series

Precision Valve Timing: Heavy-Duty Camshafts for Industrial Diesel Power

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Quick Summary: Cummins Camshaft Solutions

Replace your failing Cummins camshaft with OEM-quality precision-ground parts. Addresses common issues like lobe pitting and surface fatigue in ISX15, NT855, and 6BT applications. Fits equipment including Peterbilt 389, Kenworth T800, and Komatsu D85 dozers. Global shipping available.

Metallurgical Hardness: Camshaft Reliability for Mining & Logistics Fleets

In the high-torque cycle of a heavy-duty diesel engine, the camshaft dictates the “breathing” efficiency and fuel injection timing. Ruich Value supplies a wholesale inventory of high-precision Cummins Camshafts designed for mixed industrial fleets. Whether you are replacing a pitted injector cam on a C15 ACERT (Note: ISX15/QSX15 context) or overhauling a legacy NT855 Big Cam engine in a bulldozer, our catalog provides the metallurgical hardness required to resist lobe wear and roller follower damage. Cummins engines operate in some of the world’s harshest environments. High soot levels and extended oil intervals can lead to surface fatigue on the cam lobes. Our replacement assemblies are manufactured from Forged Steel or Chilled Cast Iron, featuring lobes that are induction hardened to HRC 58-62. This superior surface treatment ensures the cam profile retains its lift and duration specifications even under the extreme contact pressure of unit injector rocker arms.

Buyer’s Guide: Choosing the Right Cummins Camshaft

Cummins camshaft designs vary significantly between engine families. Selecting the right replacement requires understanding these architectural differences.
Camshaft Architecture Typical Material & Design Best Application / Series
In-Block (Pushrod) Forged Steel or Alloy Iron. Controls valves via pushrods. Mid-Range & Legacy HD (e.g., 4BT, 6BT, NT855, N14). The classic robust design.
Dual Overhead Cam (DOHC) Separate Intake and Injector cams. Composite or Steel. Modern Heavy Duty (e.g., ISX15, QSX15). Allows for high-pressure fuel injection timing.
Segmented / Large Frame Chilled Cast Iron. High mass for inertia control. High Horsepower (HHP) (e.g., KTA19, KTA38, KTA50). Mining and marine power.

Cummins Engine & Equipment Applications

Engine Series Verified Equipment Models
Mid-Range (B & C Series)
  • Case Backhoes & Loaders
  • Dodge Ram Pickups (5.9L / 6.7L)
  • Engines: 4BT, 6BT, 6CT, ISC 8.3
Heavy Duty (N, M, ISX)
  • Kenworth & Peterbilt Trucks
  • Shantui & Komatsu Dozers
  • Engines: NT855 (Big Cam), N14, M11, ISX15
High Horsepower (KTA/QSK)
  • Caterpillar & Hitachi Mining Haul Trucks
  • Marine Propulsion & Gensets
  • Engines: KTA19, KTA38, KTA50, QSK60

Why Source Cummins Camshafts from Ruich Value?

  • Induction Hardening: Surface depth > 2mm, HRC 55+. Solves: Prevents premature wear on injector lobes caused by high-pressure injection loads.
  • CNC Precision Grinding: Micron-level profile tolerance. Solves: Ensures optimal power output and fuel efficiency matching factory standards.
  • Dynamic Balancing: 100% Rotational testing. Solves: Reduces stress on cam bearings and prevents timing gear failure.
  • Comprehensive Range: From 4BT to KTA50. Solves: Allows you to consolidate orders for diverse fleet requirements.
  • Reinforced Export Crates: Suspended anti-rust packaging. Solves: Ensuring the polished lobes arrive without corrosion or impact marks.

Compatible Equipment Models

This Cummins Camshaft collection fits equipment including: Peterbilt 389, Kenworth T800, Komatsu D85, Case 580, and Dodge Ram 2500/3500. Contact us for complete application coverage.

Available Cummins Camshaft Range

Our inventory includes Intake, Exhaust, and Injector camshafts for both vintage and modern Cummins platforms.
ModelMain PNCro. Ref. PNEngine ModelApplication
V2840731343070838, 3053525, 3801308, C3970366V28 Series (V12)Heavy-duty Mining (Terex), Marine, Large Gensets
NH22038011143044767, 3042568, 111888NH220 / NT855 Small CamClassic Heavy Trucks, Early Generators, Construction Machinery
V9031991803070838, 3053525V903 / VT903 SeriesAgricultural Machinery, Drilling Rigs, Military
NT85538010303044767, 3047452, 3801749NT855 Big CamHeavy-duty Trucks, Mining (Komatsu), Power Generation
4BT39290393925582, 3929038, 39298854BT Series (3.9L)Light Trucks, Skid Steer Loaders, Pumping Units
6BT39490423929886, 3907824, 3914639, 3929041, 32831796BT Series (12-Valve)Dodge Ram, Freightliner, Agricultural Tractors
6CT39341683914640, 3923478, 3917882, 3929734, 3924471, 3356593 (Kit)6CT Series (8.3L)City Buses, Construction Cranes, Graders
ISB6.739795063954099, 3976620, 3966431, 3966430ISB6.7 / QSB6.7 SeriesSchool Buses (Blue Bird), Delivery Trucks (Paccar)
L1038011103803528, 3049024, 3065891L10 SeriesVocational Trucks, Garbage Trucks, Transit Buses
M1138037033084568, 3417765, 3804300M11 / ISM11 SeriesHeavy-duty Fleet Trucks, Cement Mixers
N1438035553066892, 3417766, 3803965N14 Select / PlusClass 8 Over-the-Road Trucks (Peterbilt, Volvo)
K1930668773066881, 3076767K19 / KTA19 SeriesMining Excavators, Marine Propulsion, Industrial
K3830668843020613, 3066882K38 Series (V12)High-Horsepower Generators, Mining Trucks
K5030662913066292, 3076769K50 Series (V16)Marine Vessels, Extra-Large Mining Equipment
ISX1541014324298626, 4089371, 4954905ISX / QSX15 (Signature)Highway Trucks, Freight Transportation
ISF 2.852679945267994 (Standard)ISF 2.8 SeriesFoton Tunland, JAC Trucks, Light Vans
ISF 3.849958304995830 (Standard)ISF 3.8 SeriesMedium Duty Trucks, Foton Aumark

Looking for more components? Explore our complete Cummins Industrial Diesel Engine Parts Catalog

Technical Q&A: Cummins Camshafts

What is the most common failure mode for Cummins camshafts?

The most frequent physical failure is lobe pitting and surface fatigue. This is usually caused by excessive soot accumulation in the oil or extended service intervals, which compromises the induction-hardened surface. Our replacement camshafts utilize HRC 58-62 hardness to ensure long-term durability under high-torque loads.

What are the critical installation parameters for a Cummins camshaft?

When installing a Cummins camshaft, critical parameters include verifying the camshaft bore alignment, proper cam bushing clearance (typically 0.003-0.005 inches), and precise valve and injector timing settings as per the engine’s CPL (Control Parts List).

Why does the replacement require specific materials like Chilled Iron or Forged Steel?

To combat high-contact stress in heavy-duty diesel environments, our camshafts use forged steel for high-strength requirements or chilled cast iron for its superior dampening properties and natural resistance to galling in specific high-horsepower applications.

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Note: Customized/billet development based on drawings or samples is also available for high-performance or obsolete engine applications.

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