Custom Billet 4340 Crankshaft for Opel Frontera A Manta B CIH 2.4 Stroker Crankshaft

Product Overview

Description

     Custom Billet 4340 Crankshaft for Opel CIH 2.4 Stroker Crankshaft 

 

 Quick Detail

 

Material	Full CNC 4340 Billet Steel
Date of Delivery	5-7 days if in stock,80-90 days if out of stock
Application	for Opel CIH 2.4 Stroker Crankshaft

 

 

     Dimension

 

 

Main Journal Diameter	***mm
Rod Journal	***mm
Stroke	***mm
Net Weight	***kg
Length	***mm

 

 

 

NLGROUP  DESIGN  

 

 

customized design counterweight                        Pendulum Undercut Counterweight

 

   

 

Knife Edge Counterweights                                      Oil Groove Counterweights

 

     

 

Knife Edge Counterweights                                   Tapered Counterweights

 

       

 

Lighten Holes at Rod Journals                                           

 

 

 

 

Technical Features

 

 

• Materials:40CrNiMoA  Heating treatment:HRC34-38

• Crankshaft will get thermal refining after normalizing,HRC34-38.The difference will be within 4HRC on same one cranks

 

• No over burning,carbon-free surface layer is within 0.3mm 

 

• Folding,oilet,cracks, oxidation and other things is not permitted for Cranks macrostructure.

• Balance weight value need keep 0-20g.cm on counterweight of big end and small end

 

• Peening treatment will be done after balance weight 

• Nitrogen treatment will be done after precision grind,compound layer depth is 0.008mm after polishing.diffusion layer is over 0.3mm,hardness on surface is not less than 500HV.

• No damage,scallops and other visible disadvantage on surface.

 

• Crankshaft will be cleaned up to make sure there is no filings in oil hole.

 

• magnetic flaw detecting will be done according to standard JB/76729-93

 

• Other size tolerance :standdars GB1804-79  IT14,No marked place  roughness:Ra6.3

 

 

Processing & Packaging