Vitrified Bond CBN Grinding Wheels for Camshaft and Crankshaft

Main features High grinding efficiency / High precision and good surface quality Easy to dress with an electroplated dressing roller Conventional Specifications: 1A1, 3A1, 14A1, 9A1B, 3Q1, 14LL1

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Brief Introduction

The crankshaft is a key component of a piston engine, and it plays an important role in bearing impact loads and transmitting power in the engines of cars, trucks, motorcycles, ships, model airplanes, and lawnmowers
It converts the force of the lever movement into output through the crankshaft and drives other accessories on the engine to work.
The crankshaft is subjected to the combined action of the centrifugal force of the rotating mass, the periodically changing gas inertial force, and the reciprocating inertial force, and bears the load of bending and torsion, so it must have sufficient strength and rigidity.
The journal surface needs to have good wear resistance, uniformity and balance.

Product Size

Application introduction:
Workpiece: engine crankshaft
Workpiece material: forged steel 1538MV
Machine tool: JUNKER JUCRANK 6S
Grinding position: main journal and connecting rod journal
Grinding allowance: cut-in grinding, unilateral 0.3mm
Repairing system: online dressing with diamond roller
Accuracy requirements: roughness
Processing parameters:
Grinding wheel speed: 90m/s
Roller dressing speed: 450mm/min
Trimming amount: 4um×4 circles
Technical Parameters:
● Requirements for the working conditions of the grinding wheel: the linear speed is 120 m/s, and the five main journals and four connecting rod journals of the crankshaft are ground;
● The material of the workpiece is 42CrMo; the substrate is quenched and tempered: the hardness is HB207-269, the surface of the main journal connecting rod is quenched by intermediate frequency, the hardness is HRC50-60;
● The grinding allowance of the workpiece is 0.5-0.7mm in the diameter direction, and 0.1-0.2mm on the end face. The surface roughness of the workpiece after grinding is: Ra0.2um.
● Other requirements (grain size, hardness, concentration and grinding wheel balance, etc.) shall be implemented according to the manufacturer's standard and related design.

Product Application

Application:
Mainly used for the precise grinding of the camshaft of CAM.
Mainly used for the precise grinding of crankpin, main journal,flange neck, thrust face and end face.

Applied material:
Cast iron: Chilled cast iron, nodular cast iron, grey cast iron, alloy cast iron etc.
Steel: 20Cr, GCr15, CF53, 45# steel, 55# steel, 80B high carbon steel etc.

Main grinders:

NAXOS:NAXOS-UNION、P310×1250、GF70

TOTODA:GCS63、GL5P-63、GL6P-100、GCH120B、GC32M-63、GCH63B、GL63M-T

JUNKER:JUCAM5002/10、JUCAM500、JUCRANK5000、6000

SCHAUDT:CF41、CF61、ZEUSMX、ZXII

LANDIS:LT1、LT2