Custom Die Forging Auto Transmission Control Forged Connecting Rod for Engine Parts
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Product Highlights
- High Precision CNC Machining: Superior tolerances as tight as 0.0003 inches for optimal performance.
- Shot Peening Treatment: 0.3-0.5mm shot peening significantly improves fatigue life and durability.
- Multi-Stage Heat Treatment: Ensures maximum strength, dimensional stability, and extended fatigue life.
- Optimal Weight Balancing: Weight matched sets with tolerance of +/- 1g to prevent engine vibration.
- OEM/ODM Customization: Full customization support including samples, designs, and flexible options.
- Certified Quality Standards: Compliant with ISO 9001, TS16949, RoHS, CE, and SGS certifications.
- High Strength Material: Manufactured from high tensile forged 4340 steel for superior durability.
- Fast Delivery Service: Delivery within 20 days after confirmation; one month during peak season.
Product Attributes
- Customization
- Available
- After-sales Service
- Contact Us
- Application
- Excavator, Lawnmower, Tractor, Ke Tan, Boat, Motorbike, Truck, Car, Auto Parts
- Model NO.
- SA-AP
- Certification
- RoHS, TS16949, ISO 9001, CE
- Warranty
- 6 Months
- Engine Type
- Gasoline
- Material
- Steel
- Name
- Connecting Rod
- Processing Object
- Metal
- Molding Style
- Forging
- Molding Technics
- Pressure Casting
- Heat Treatment
- Normalizing
- Forging Tolerance
- +/-0.5mm
- Standard
- GB
- Color
- as Forging or as Per Customers' Requirement
- Modle Number
- Non-Standard
- Dimension
- Customized
- Process
- Hot Forging, Heat Treatment, CNC Machining
- Unique
- China Gold Supplier
- Process Way
- by Forging Machine and Press
- Surface Finish
- Polishing
- OEM Service
- Yes
- Transport Package
- Plywood Box
- Specification
- SGS
- Trademark
- ShengAo
- Origin
- Weifang, Shangdong, China
- HS Code
- 87089910
- Production Capacity
- 50000PCS/Month
- Package Size
- 50.00cm * 60.00cm * 50.00cm
- Package Gross Weight
- 50.000kg
Shipping
- Shipping Cost:
- Contact the supplier about freight and estimated delivery time.
Online Trading Protection
- Payment Guarantee
-
Platform-protected payments with refund support for eligible order issues.
- Platform Logistics
- Clearer shipment tracking with platform-supported logistics.
- Inspection Service
- Optional pre-shipment inspection for quality and quantity checks.
- After-Sales & Dispute Handling
- Platform-assisted dispute resolution, including refunds or returns when applicable.
Only orders placed and paid through Made-in-China.com Secured Trading are eligible for payment protection and the corresponding platform services.
Product Images of Custom Die Forging Auto Transmission Control Forged Connecting Rod for Engine Parts
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Custom Die Forging Auto Transmission Control Forged Connecting Rod for Engine Parts -
Custom Die Forging Auto Transmission Control Forged Connecting Rod for Engine Parts -
Custom Die Forging Auto Transmission Control Forged Connecting Rod for Engine Parts -
Custom Die Forging Auto Transmission Control Forged Connecting Rod for Engine Parts -
Custom Die Forging Auto Transmission Control Forged Connecting Rod for Engine Parts -
Custom Die Forging Auto Transmission Control Forged Connecting Rod for Engine Parts -
Custom Die Forging Auto Transmission Control Forged Connecting Rod for Engine Parts
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Product Description
Custom Die Forging Parts Auto Transmission Control Connecting Rod for Engine Parts
Technical Features:
* Shot Peening for improved fatigue life
* Magnaflux Inspection guarantees the consistency of the forged material meets our high quality standard
* Multi Stage Heat Treat for maximum strength, dimensional stability, and fatigue life.
* CNC machining for superior tolerances as tight as 0.0003"
* Optimal balancing for weight matched sets (+/- 1g)
* Max. center to center length is 180mm
| Specifications | |
| Part name |
Connecting rod |
| Certification | ISO 9001:2015; SGS |
| Process | Forging, Cnc Machining, Cnc Milling, Drilling,Turning etc |
| Material | Forged Steel |
Features:
a.Item: Customized Steel forging parts
b.Drawing: as your requirement
c.Surface; anneal,quenching, tempering
d.Material: #45steel, carbon steel, Iron.
e.Product: manhole cover, pipe fitting, flange, machine parts, pump parts, etc.
f.Technology: forging
g.Advantages: Delivery on time, according to the demand for materials
h.Packing: wooden case or as your requirement.
i.Deliverywithin 20 days after receiving last confirm information.
| Material | High Tensile Forged 4340 Steel |
| Surface Treatment | 0.3-0.5mm Shot Peening |
| Balanced Weight | Optimal +/- 1g per Set |
| B.E and S.E Tolerance | ≤+/-0.00017" |
| Verticality, Parallelism and Distortion | ≤+/-0.00018" |
| Center to Center Distance Tolerance | ≤+/-0.001" |
| HRC | 33-38 |
| Horse Power | 200hp per Cylinder |
| Torque of Bolt | 3/8"-75N.M; 7/16"-95N.M |
| Rate of NL GROUP Bolt | 226,000psi |
Our Services:
1. OEM Manufacturing welcome: Product, Package...
2. Sample order
3. We will reply you for your inquiry in 24 hours.
4. after sending, we will track the products for you once every two days, until you get the products. When you got the goods, test them, and give me a feedback.If you have any questions about the problem, contact with us, we will offer the solve way for you.
|
Place of Origin
|
China
|
|
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Shandong
|
|
Brand Name
|
OEM
|
|
Car Model
|
car parts
|
|
Material
|
Steel
|
|
Service
|
OEM ODM
|
|
Surface treatment
|
Customers' Demand
|
|
Tolerance
|
Drawing Request
|
|
Equipment
|
4station Cold Forging
|
|
Standard
|
Non Standard Parts
|
|
Certification
|
ISO
|
| Mininum of Quantity | 100 Piece/Pieces |
| Unit Weight | 0.5kg~5kg |
| Price | FOB Qingdao,China |
| Packing Details | Paper Box in Wooden Pallet |
| Delivery Time | One month |
| Payment Terms | L/C, T/T |
| Machining | CNC or |
| Supply Capacity | 50 Metric Tons per Month |
| Standard | DIN,ASTM,GOST,B |
Production process diagram
1.-- customers provide mould design or sample for us
2.-- mutual discuss for the specification of product including the material, special treatment, the price, delivery time
3.-- provide competitive price for customer and send PI immediately
4.-- quick manufacture upon received the down payment
5.-- send sample first and batch production for achieved the confirmation of customer
6.-- determined by customer's requirement
FAQs:
Q1: What is a connecting rod?
A connecting rod is a precision engine component that links the piston to the crankshaft, converting the piston's reciprocating motion into the crankshaft's rotational motion.
Q2: What are the main parts of a connecting rod?
Big End: Larger circular end that attaches to the crankshaft journal
Small End: Smaller end that connects to the piston pin (wrist pin)
Rod Shaft/Beam: The central structural member
Bearing Surfaces: Precision surfaces for crank and piston pin bearings
Bolt Holes: For connecting rod cap assembly
Q3: What materials are connecting rods made from?
Forged Steel: Most common in production engines (high strength, durability)
Cast Iron: Older or lower-performance engines
Aluminum: Racing applications (lighter but less durable)
Titanium: High-performance racing (excellent strength-to-weight ratio)
Powdered Metal: Modern manufacturing technique for complex shapes
Q4: What are the different types of connecting rods?
I-beam Rods: Standard design, good strength-to-weight ratio
H-beam Rods: Wider design for high RPM/high horsepower applications
Billet Rods: Machined from solid material (custom applications)
Cracked Cap Rods: Fracture-split design for perfect cap alignment
Q5: Why are connecting rods balanced?
Proper balancing prevents:
Engine vibration
Premature bearing wear
Reduced engine life
Potential catastrophic failure
All rods in an engine must be weight-matched within tight tolerances.
Q6: What causes connecting rod failure?
Fatigue: Repeated stress cycles
Over-revving: Exceeding RPM limits
Detonation/Knock: Abnormal combustion pressures
Oil Starvation: Insufficient lubrication
Improper Installation: Wrong torque specs or alignment
Material Defects: Manufacturing flaws
Q7: What are the signs of connecting rod problems?
Loud knocking noise from engine (especially under load)
Low oil pressure
Metal particles in oil
Engine vibration
Loss of power
Visible damage or bending upon inspection
Q8: How do I measure connecting rod wear?
Critical measurements include:
Big End Bore Diameter: Check for ovality and taper
Small End Bore Diameter: Wear assessment
Center-to-Center Distance: Rod length consistency
Bearing Clearance: Using plastigage or micrometers
Straightness and Twist Alignment: Using specialized fixtures
Q9: What maintenance do connecting rods require?
Regular oil changes with proper viscosity oil
Inspection during engine rebuilds
Bearing replacement at rebuild intervals
Checking bolt torque specifications
Visual inspection for cracks or bending
Q10: How are connecting rods manufactured?
Forging/Casting: Initial shape formation
Machining: Precision milling of all surfaces
Heat Treatment: Enhancing material properties
Balancing: Weight matching to specifications
Surface Finishing: Polishing or shot peening
Quality Inspection: Dimensional verification and crack testing
Q11: What are ARP bolts and why are they important?
ARP (Automotive Racing Products) bolts are high-strength fasteners that:
Provide more consistent clamping force
Resist stretching under load
Reduce the risk of rod cap separation
Are essential in high-performance applications
Q12: Can connecting rods be reused or should they always be replaced?
Reuse if:
Within manufacturer's specifications
No visible damage or wear
Proper cleaning and inspection
Original equipment in stock applications
Replace when:
Building a performance engine
Visible damage or wear
Uncertain history
Upgrading engine components
High-mileage engines
Q13: What are "stroker" connecting rods?
Special rods designed for stroker engine kits that:
Have different lengths than stock rods
Accommodate increased stroke crankshafts
Maintain proper piston placement and compression height
Require matching piston and crank components
Q14: How does rod length affect engine performance?
Longer Rods: Reduce piston side loading, potentially higher RPM capability
Shorter Rods: Increase piston speed, change combustion characteristics
Rod/Stroke Ratio: Affects piston motion, torque curve, and engine balance
Q15: What are torque-to-yield bolts?
One-time-use bolts that:
Are stretched to yield point during installation
Provide extremely consistent clamping force
Must ALWAYS be replaced during reassembly
Are common in modern engines
If there's anything I can help, please feel free to contact with me.
About the Supplier
This supplier has been audited by TÜV Rheinland. Verify the report on the official TÜV Rheinland website with ID "MIC-ASR2551414". Items marked "
" are certified.
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Company Profile
WeiFang Shengao Machinery Co., Ltd is located in WeiFang the famous city in China and the world center of kites. It is 140 kilometers far away from Qingdao port, the transportation is very convenient. Our company use the location advantages of ShanDong province to integrate resources so that we can processing according to the drawings of customers.
We mainly undertake the forging parts, stamping parts, casting parts, machining parts and other machinery spare parts. The main products we could do are gears and gear boxes, manhole covers, bucket teeth, flywheels, stove fireplace, cookwares, pump and valve spares, engine spares...Our products have been exported to the United States, Denmark, Italy, Russia, Australia etc for more than 15 years.
The material we can adopt is included various kinds of cast steel and cast iron, heat-resistant steel, carbon steel, alloy steel, alloys and other customized materials. We have strong processing capacity, we own MAZAK, HSS, YOUJI and other brands machining centers from the abroad, we also have lathes, NC lathes, NC milling, boring, grinding, drilling, broaching and wire electrode cutting machines, which are used to ensure we can fulfill different machining requirements from our customers.
We can produce according to the drawings of customers. Our Import and Export Department have many years experiences of foreign trading and our products are mainly exported to the United States, Denmark, Italy, Russia, Australia, Iran, Pakistan, South Africa etc.
Over the years, company adhere to the guideline for management of "Quality first, Reputation first, Delivery just-in-time, Price best". We will try our best to improve the technical level and perfect the enterprise management. Our company will depend on superior quality of products and sincere service to cooperate with domestic and overseas, new and old customers and establish eternal friendship to create a bright future. Sincerely welcome your drawings and samples or any other kinds of designs, our team will try the best to serve you and satisfy all the requirements you have.
Why choose us to produce your parts?
1) Experienced staffs will reply you in 24 hours.
2) Welcome OEM, ODM and Smaller quantity.
3) Exclusive and unique solution can be provided to you.
4) Special discount and protection of sales area.
5) Random quality inspection during production.
6) Delivery on time.
7) At a competitive price from our own factory.
About Our Factory & Business Background
- Address
- Room1002-1005, No. 10 Building, Yuhe Road, Shengli Street, Kuiwen District, Weifang, Shandong, China
-
Plant Area
- 41 square meters
-
Registered Capital
- 1,000,000 RMB
-
Terms of Payment
- LC, T/T, D/P, PayPal, Western Union, Small-amount payment
-
International Commercial Terms(Incoterms)
- FOB, CIF, CFR, EXW
- Average Lead Time
-
Peak Season Lead Time: one month
Off Season Lead Time: within 15 workdays -
Nearest Port
- Qingdao Port
Our Production Capability & Technical Expertise
-
Main Products
- Mechanical Parts
-
Customization Options
- Customization from Samples, Customization from Designs, Full Customization, Minor Customization, Flexible customization
-
R&D Engineers
- 2 people
Our Industry Experience & Global Business Record
- Export Year
- 2010-04-06
-
Main Markets
- North America, Europe, Southeast Asia/ Mideast
-
Number of Foreign Trading Staff
- 5
-
Overseas Agent/Branch
- No
-
New Products Launched in Last year
- No
FAQ
- What is a connecting rod?
- A connecting rod is a precision engine component that links the piston to the crankshaft, converting the piston's reciprocating motion into the crankshaft's rotational motion.
- What materials are connecting rods made from?
- Common materials include Forged Steel (high strength), Cast Iron, Aluminum (racing), Titanium (high-performance), and Powdered Metal.
- What are the different types of connecting rods?
- Types include I-beam Rods (standard), H-beam Rods (high RPM), Billet Rods (machined from solid), and Cracked Cap Rods (fracture-split design).
- Why are connecting rods balanced?
- Proper balancing prevents engine vibration, premature bearing wear, reduced engine life, and potential catastrophic failure.
- What causes connecting rod failure?
- Failure causes include fatigue, over-revving, detonation/knock, oil starvation, improper installation, and material defects.
- What are the signs of connecting rod problems?
- Signs include loud knocking noise, low oil pressure, metal particles in oil, engine vibration, loss of power, and visible damage.
- How do I measure connecting rod wear?
- Measure Big End Bore Diameter, Small End Bore Diameter, Center-to-Center Distance, Bearing Clearance, and Straightness/Twist Alignment.
- What maintenance do connecting rods require?
- Maintenance includes regular oil changes, inspection during rebuilds, bearing replacement, checking bolt torque, and visual inspection for cracks.
- How are connecting rods manufactured?
- Manufacturing involves Forging/Casting, Precision Machining, Heat Treatment, Balancing, Surface Finishing, and Quality Inspection.
- What are ARP bolts and why are they important?
- ARP bolts are high-strength fasteners that provide consistent clamping force, resist stretching, and reduce rod cap separation risk.
- Can connecting rods be reused or should they always be replaced?
- Reuse if within specs and undamaged; replace when building performance engines, if damaged, or for high-mileage engines.
- What are 'stroker' connecting rods?
- Special rods for stroker kits with different lengths to accommodate increased stroke crankshafts and maintain proper piston placement.
- How does rod length affect engine performance?
- Longer rods reduce piston side loading and may allow higher RPM; shorter rods increase piston speed and change combustion characteristics.
- What are torque-to-yield bolts?
- One-time-use bolts stretched to yield point for consistent clamping force; they must ALWAYS be replaced during reassembly.
- What is the warranty period?
- We provide a 6-month warranty for our products.
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