Spring Measurements Specs
Totally 13 blades ,1-8 blade Width(mm)*Thickness(mm): 76*15, 9-10 blade Width(mm)*Thickness(mm): 76*12 , 11th 13th blade 76*9 , 12th blade 76*11, end to end Measurement 1500 mm (Free Length Measurement),Tolerance range within ±3mm . 1pcs biametal bushesØ35*Ø41*74 comes to install spring eyes .
Free Arch Measurement (see picture) 76.2mm,Tolerance range within ±3.2 mm .
All datas are obtained by measuring the new produce product .
Freightliner Trucks Introduce
Freightliner Trucks is an American truck manufacturer ,it is known mainly for the heavy duty class 8 diesel trucks it also offers,classes 5-7 trucks and currently is part of daimler Trucks North America,LLC.
Class8 :FLA-Series(FLA,FLA-104,FLA-104-64,FLA-75,FLA-7542T,FLA-8662,FLA-8664T,FLA-9664,FLA-9664T),FLB,FLB-100-42T,FLB-104-64,FLB-9664)FLT-Series(FLT,FLT-6442,FLT-9664,FLT-7564),Argosy,FLC-Series(FLC.FLC-112/112-62-ST/120/120-64-T),108SD-AB,114SD-AB,114SD-AF,Class Series(Classic/XL),C-Series(Cascadia(ca125),Century(C120,Class S/T),Columbia(CL120),Coronado(CC132,SD),FLD-Series(FLD/112/120 42 S/120-64 ST/120-64 T/120-HD/120-SD/120-SFFA/132-64T-Classic-XL/SD)
Jiachuang Leaf Springs Advantage
01.No Rust problem + Perfect looking
Method:
>> Single leaf by electrophoretic painting(Optional)
>> Sembling spring by electrostatic painting(Optional)
Benefits for customers
>> Salt spray testing > 500 hours beat general industrial level 200 hours,avoid rust possiblity
>> Perfect-looking -- uniform painting, complete painting, no scratch
02. Pre shot-peening
Method:
>> Make shot peening under rated capacity
Benefits for customers
>> 180,000 times fatigue life beat general level 150,000 times;
>> bear heavier capacity and use longer time;
03. Pre-pressing and adjust
Method:
>> Make pre-pressing under rated capacity
>> Select camber by computer
Benefits for customers
>> Guarantee reasonable camber and keep smallest tolerance,
>> select out leaf spring whose camber is not qualified
Key Points Keep The High Quality
| 1) Raw matrail . |
| Thickness less than 20mm. we choose SUP9/55Cr3/SAE5160H as the product material |
| Thickness from 20-30mm. wE choose SUP11A/50CrVA |
| Thickness more than 30mm. We choose 51CrV4 as the raw material |
| Thickness more than 50mm. We choose 52CrMoV4 as the raw material |
| 2) Quchenging Process |
| We strickly controled the steel temeprure around 800 degree. |
| we swing the spring in the qenching oil among 10 seconds according to the spring thickness. |
| 3)Shot Peening. |
| Each assmembing spring set under stress peening . |
| Fatigue test can reach over 150000 cycus |
| 4) Painting |
| Each leaf under cataphoresis painting. |
| Salt spray testing reach 500hours |
Production Process
1.Material Cutting
4.Edge Cutting
7.Stress Peening
2.Punching
5.Quenching
8.Assembling
3.Eye Rolling
6.Tempering
9.Painting
FAQ
Q1: What type of leaf spring could you produce ?
A: We can produce most kinds of springs in the market. especially on the parabolic springs.
Q2: What material could you supply for leaf spring?
A: Our material grade should be SUP9/SUP9A /SUP11A/51CrV4 /52CrMoV4/ even 55Cr3 and SAE5160H as well .
Q3: How long will be your delivery time?
A: 20-40days. If material stock enough around 20days. if not,would be 40days
Q4: What payment terms are acceptable?
A: TT and LC at sight
Q5: What is the packing?
A: No fumigation wooden pallet . we also can pack according to whatever you request if reasonable.
Q6:How about the surface finishing ?
A : electrophoresis coating (black,red,gray,or as customer’s requests )