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Low Friction Shock Absorber Piston Rod with Smooth Sliding Surface
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Low Friction Shock Absorber Piston Rod with Smooth Sliding Surface
  • name
  • name

Low Friction Shock Absorber Piston Rod with Smooth Sliding Surface

MOQ: 150 sets
Price: USD1.3 ~ 1.6 /set
Standard Packaging: 10-50 PCS in one carton or plastic blister tray, outside wooden pallet or wooden box.
Delivery Period: 15-25days after PO confirmed
Payment Method: L/C,T/T,Western Union
Supply Capacity: 500 sets per day
Detail Information
Product Description
Detail Information
Place of Origin
NINGBO,CHINA
Brand Name
XIAYI
Certification
IATF16949:2016
Model Number
K25-50-1211-3
Outer Diameter:
12.5MM
Total Length:
390MM
OD Of One End:
M8 X 1.25
OD Of Another End:
M10 X 1.25
Material:
S 45 C
Coaxiality:
0.05
Product Description
Low Friction Shock Absorber Piston Rod with Smooth Sliding Surface

Friction at the rod-seal interface is a direct energy loss in any shock absorber system — it generates heat, accelerates seal degradation, and introduces stick-slip that compromises ride quality. Our Low Friction Piston Rod is manufactured with an exceptionally smooth sliding surface (Rz 0.2 μm maximum, ISO f7 diameter tolerance) that minimizes sliding resistance. For electric vehicle (EV) and premium passenger car applications where every watt of energy efficiency matters and Noise-Vibration-Harshness (NVH) standards are stringent, this rod delivers measurable improvements in both system efficiency and ride refinement.

Ultra-Smooth Surface for Minimal Friction and Maximum Energy Efficiency

Reduced Energy Loss: Lower surface friction means less parasitic drag on the damper system, contributing to improved overall vehicle energy efficiency — a critical metric for EV range optimization.

Quieter, Smoother Ride: The ultra-smooth finish eliminates micro stick-slip at the seal interface, resulting in lower NVH levels and a more refined ride experience that end-users can feel.

Extended Seal Service Life: Reduced friction means less heat generation at the seal contact point, directly extending seal longevity and lowering the risk of premature oil leakage.

Consistent Damping Response: Stable, predictable friction characteristics across the full stroke length ensure uniform damping force delivery regardless of rod position or cycling frequency.

Product Specifications
Outer DiameterØ12.5 (-0.01/-0.03) mm
Total Length390 mm
Steel MaterialCK45, SAE1045, 4140, 4340, JIS45C, 40Cr, 42CrMo
Chrome Hardness950 HV Minimum
Surface RoughnessRz 0.2 μm Maximum
Straightness≤ 0.2 mm / 1000 mm
Supply Condition Options
  • Hard Chrome Plated
  • Induction Hardened
  • Dehydrogenation & Tempered
Manufacturing Process
  1. Hydraulic Steel Raw Material Cutting
  2. CNC Machining with Broaching & Milling Operations
  3. Induction Hardening
  4. Chrome Plating
  5. Dehydrogenation & Tempering
  6. Polish & Superfinish Polish
  7. 100% Final Inspection
  8. Craft Boxes & Wooden Case Packaging
Quality Assurance & Capabilities
Quality SystemIATF 16949:2016 Certified / SGS / TÜV
Surface TreatmentsBlackening, Polishing, Anodize, Chrome Plating, Zinc Plating, Nickel Plating, Grinding
Drawing FormatsSolidWorks, Pro/Engineer, AutoCAD, UG, PDF
Core EquipmentJapan TSUGAMI B-038T 5-Axis CNC Turning, Japan GAMA DMN-650 4-Axis Machining Center, Cylindrical Bore Grinders, Wire EDM, Magnetic Grinding & Vibration Machining, Oven, Ultrasonic Cleaning, Vacuum Packing
Inspection InstrumentsVMS 2.5D Measuring Machine, Mitutoyo Tool Microscope, Mitutoyo Digimatic Micrometer, Mitutoyo Hardness Tester, Mitutoyo Calipers, Mitutoyo Dial Indicator, Mitutoyo Height Gauge, Mitutoyo Tubular Inside Micrometer, Marble Platform, Go/No-Go Gauges, Electronic Digital Caliper, Ring Gauges
Industry ApplicationsMachinery, Heavy-Duty Equipment, Electronic Devices, Auto Spare Parts, Optical Telecommunication
Our Advantages
  • 15+ years of CNC precision machining expertise with a proven track record
  • Japan TSUGAMI CNC machines delivering industry-leading consistency and accuracy
  • IATF 16949:2016 certified quality management — functional excellence and cosmetic perfection
  • Always reliable, professional, and proactive in communication and service
Frequently Asked Questions

Q1: What makes this rod 'low friction' compared to standard chrome plated rods?

The key difference lies in our superfinish polishing stage after chrome plating. While standard rods achieve Ra 0.2 μm, our low-friction rod targets Rz 0.2 μm maximum through an additional precision polishing step that creates a measurably smoother surface. This reduces the coefficient of friction at the seal interface and is especially valuable for premium applications where ride refinement matters.

Q2: Is this rod suitable for electric vehicle applications?

Absolutely. EV shock absorbers operate under different demands — regenerative braking changes damping patterns and energy efficiency is paramount. The reduced friction of this rod contributes to lower parasitic losses in the suspension system, supporting extended driving range.

Q3: Are you a manufacturer or trading company?

We are a direct manufacturer with over 15 years in precision CNC machining. Our IATF 16949:2016 certified facility in Ningbo is open for customer audits.

Q4: What is your production lead time?

5 working days for in-stock standard sizes; 15–45 days for mass production.

Q5: Do you offer OEM customization for different rod diameters and lengths?

Yes. We manufacture rods from Ø6 mm to Ø500 mm and lengths up to 16 meters. Send us your drawing in SolidWorks, Pro/E, AutoCAD, UG, or PDF format and we will provide a detailed quotation.

Q6: From which seaports do you export?

Guangzhou, Ningbo, and Shanghai — optimized for your shipping destination.

Q7: What warranty and after-sales support do you provide?

12-month warranty from purchase date covering manufacturing defects. Free replacement for verified quality issues. Excludes racing damage, improper installation, or unauthorized modification.

Product Image Low Friction Shock Absorber Piston Rod with Smooth Sliding Surface
Tags: 

hydraulic piston rod,  

hollow piston rod,  

shock absorber rod

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Products
PRODUCTS DETAILS
Products

Shock Absorber Parts

Shock Absorber Piston

Banded Piston

Shock Absorber Mounting

Shock Absorber Guide

Shock Base Valve

Shock Oil Seal

Shock Valve Shims

Shock Absorber Bracket

Shock Absorber Piston Rod

Shock Piston Machine

Du Bushing

PTFE Bands

PTFE Ring Gasket

PTFE Parts

Guide Ring
Low Friction Shock Absorber Piston Rod with Smooth Sliding Surface
  • name
  • name
Low Friction Shock Absorber Piston Rod with Smooth Sliding Surface
MOQ: 150 sets
Price: USD1.3 ~ 1.6 /set
Standard Packaging: 10-50 PCS in one carton or plastic blister tray, outside wooden pallet or wooden box.
Delivery Period: 15-25days after PO confirmed
Payment Method: L/C,T/T,Western Union
Supply Capacity: 500 sets per day
Detail Information
Product Description
Detail Information
Place of Origin
NINGBO,CHINA
Brand Name
XIAYI
Certification
IATF16949:2016
Model Number
K25-50-1211-3
Outer Diameter:
12.5MM
Total Length:
390MM
OD Of One End:
M8 X 1.25
OD Of Another End:
M10 X 1.25
Material:
S 45 C
Coaxiality:
0.05
Minimum Order Quantity:
150 sets
Price:
USD1.3 ~ 1.6 /set
Packaging Details:
10-50 PCS in one carton or plastic blister tray, outside wooden pallet or wooden box.
Delivery Time:
15-25days after PO confirmed
Payment Terms:
L/C,T/T,Western Union
Supply Ability:
500 sets per day
Product Description
Low Friction Shock Absorber Piston Rod with Smooth Sliding Surface

Friction at the rod-seal interface is a direct energy loss in any shock absorber system — it generates heat, accelerates seal degradation, and introduces stick-slip that compromises ride quality. Our Low Friction Piston Rod is manufactured with an exceptionally smooth sliding surface (Rz 0.2 μm maximum, ISO f7 diameter tolerance) that minimizes sliding resistance. For electric vehicle (EV) and premium passenger car applications where every watt of energy efficiency matters and Noise-Vibration-Harshness (NVH) standards are stringent, this rod delivers measurable improvements in both system efficiency and ride refinement.

Ultra-Smooth Surface for Minimal Friction and Maximum Energy Efficiency

Reduced Energy Loss: Lower surface friction means less parasitic drag on the damper system, contributing to improved overall vehicle energy efficiency — a critical metric for EV range optimization.

Quieter, Smoother Ride: The ultra-smooth finish eliminates micro stick-slip at the seal interface, resulting in lower NVH levels and a more refined ride experience that end-users can feel.

Extended Seal Service Life: Reduced friction means less heat generation at the seal contact point, directly extending seal longevity and lowering the risk of premature oil leakage.

Consistent Damping Response: Stable, predictable friction characteristics across the full stroke length ensure uniform damping force delivery regardless of rod position or cycling frequency.

Product Specifications
Outer DiameterØ12.5 (-0.01/-0.03) mm
Total Length390 mm
Steel MaterialCK45, SAE1045, 4140, 4340, JIS45C, 40Cr, 42CrMo
Chrome Hardness950 HV Minimum
Surface RoughnessRz 0.2 μm Maximum
Straightness≤ 0.2 mm / 1000 mm
Supply Condition Options
  • Hard Chrome Plated
  • Induction Hardened
  • Dehydrogenation & Tempered
Manufacturing Process
  1. Hydraulic Steel Raw Material Cutting
  2. CNC Machining with Broaching & Milling Operations
  3. Induction Hardening
  4. Chrome Plating
  5. Dehydrogenation & Tempering
  6. Polish & Superfinish Polish
  7. 100% Final Inspection
  8. Craft Boxes & Wooden Case Packaging
Quality Assurance & Capabilities
Quality SystemIATF 16949:2016 Certified / SGS / TÜV
Surface TreatmentsBlackening, Polishing, Anodize, Chrome Plating, Zinc Plating, Nickel Plating, Grinding
Drawing FormatsSolidWorks, Pro/Engineer, AutoCAD, UG, PDF
Core EquipmentJapan TSUGAMI B-038T 5-Axis CNC Turning, Japan GAMA DMN-650 4-Axis Machining Center, Cylindrical Bore Grinders, Wire EDM, Magnetic Grinding & Vibration Machining, Oven, Ultrasonic Cleaning, Vacuum Packing
Inspection InstrumentsVMS 2.5D Measuring Machine, Mitutoyo Tool Microscope, Mitutoyo Digimatic Micrometer, Mitutoyo Hardness Tester, Mitutoyo Calipers, Mitutoyo Dial Indicator, Mitutoyo Height Gauge, Mitutoyo Tubular Inside Micrometer, Marble Platform, Go/No-Go Gauges, Electronic Digital Caliper, Ring Gauges
Industry ApplicationsMachinery, Heavy-Duty Equipment, Electronic Devices, Auto Spare Parts, Optical Telecommunication
Our Advantages
  • 15+ years of CNC precision machining expertise with a proven track record
  • Japan TSUGAMI CNC machines delivering industry-leading consistency and accuracy
  • IATF 16949:2016 certified quality management — functional excellence and cosmetic perfection
  • Always reliable, professional, and proactive in communication and service
Frequently Asked Questions

Q1: What makes this rod 'low friction' compared to standard chrome plated rods?

The key difference lies in our superfinish polishing stage after chrome plating. While standard rods achieve Ra 0.2 μm, our low-friction rod targets Rz 0.2 μm maximum through an additional precision polishing step that creates a measurably smoother surface. This reduces the coefficient of friction at the seal interface and is especially valuable for premium applications where ride refinement matters.

Q2: Is this rod suitable for electric vehicle applications?

Absolutely. EV shock absorbers operate under different demands — regenerative braking changes damping patterns and energy efficiency is paramount. The reduced friction of this rod contributes to lower parasitic losses in the suspension system, supporting extended driving range.

Q3: Are you a manufacturer or trading company?

We are a direct manufacturer with over 15 years in precision CNC machining. Our IATF 16949:2016 certified facility in Ningbo is open for customer audits.

Q4: What is your production lead time?

5 working days for in-stock standard sizes; 15–45 days for mass production.

Q5: Do you offer OEM customization for different rod diameters and lengths?

Yes. We manufacture rods from Ø6 mm to Ø500 mm and lengths up to 16 meters. Send us your drawing in SolidWorks, Pro/E, AutoCAD, UG, or PDF format and we will provide a detailed quotation.

Q6: From which seaports do you export?

Guangzhou, Ningbo, and Shanghai — optimized for your shipping destination.

Q7: What warranty and after-sales support do you provide?

12-month warranty from purchase date covering manufacturing defects. Free replacement for verified quality issues. Excludes racing damage, improper installation, or unauthorized modification.

Product Image Low Friction Shock Absorber Piston Rod with Smooth Sliding Surface
Tags: 

hydraulic piston rod,

hollow piston rod,

shock absorber rod

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Tel:

86--13586885132

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