OEM Carbon Steel Motorcycle Connecting Rod for Engine Parts

• Customization: Available
• After-sales Service: Contact Us
• Application: Excavator, Lawnmower, Tractor, Ke Tan, Boat, Motorbike, Truck, Car, Auto Parts
• Model NO.: SA-LG
• Certification: RoHS, TS16949, ISO 9001, CE
• Warranty: 12 Months
• Engine Type: CNG
• Material: Steel
• Name: Connecting Rod
• Processing Object: Metal
• Molding Style: Forging
• Molding Technics: Pressure Casting
• Heat Treatment: Normalizing
• Surface Treatment: Polishing
• 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
• Transport Package: Plywood Box
• Specification: SGS
• Trademark: ShengAo
• Origin: Weifang, Shangdong, China
• HS Code: 87089910
• Production Capacity: 50000PCS/Month
• Package Size: 30.00cm * 20.00cm * 15.00cm
• Package Gross Weight: 35.000kg

Product Description

OEM Carbon Steel Motorcycle Connecting Rod for Engine Parts

Product Description

 

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
	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

 

FAQ

 

FAQs:

Q1. What are your terms of packing?
A: Generally, Plywood Case+Pallet 1 piece/box and customer request.

Q2. What are your terms of payment?
A: T/T 30% as deposit, and 70% before delivery. We'll show you the photos of the products and packages 
before you pay the balance.

Q3. What are your terms of delivery?
A: EXW, FOB, CFR, CIF, DAP.

Q4. How about your delivery time?
A: Generally, it will take 7-30 days after receiving your deposit. The specific delivery time depends on the items and the quantity of your order.

Q5. Can you produce according to the samples?
A: Yes, we can produce by the samples from customer.

Q6. What is your sample policy?
A: We can supply the sample if we have ready parts in stock, but the customers have to pay the the courier cost.

Q7. Do you test all your goods before delivery?
A: Yes, we have 100% test before delivery

Q8: How do you make our business long-term and good relationship?
A:1. We keep good quality and competitive price to ensure our customers benefit ;
   2. We respect every customer as our friend and we sincerely do business and make friends with them.

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?

1. Forging/Casting: Initial shape formation

2. Machining: Precision milling of all surfaces

3. Heat Treatment: Enhancing material properties

4. Balancing: Weight matching to specifications

5. Surface Finishing: Polishing or shot peening

6. 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.