More Rollers, Higher Precision: FangRong’s 20‑Roller Straightening Machine Achieves 0.3 mm/m Straightness for Precision Shaft Applications
In the world of precision shaft manufacturing, straightness is not a specification—it is a performance requirement. FangRong’s 20‑roller configuration delivers exceptional accuracy through superior stress distribution and tighter tolerances.
DONGGUAN, China – When manufacturers of precision shafts, spindles, and guide rods demand the highest levels of straightness, the number of straightening rollers makes a measurable difference. FangRong Precision Machinery today highlighted its 20‑roller straightening machine configuration, which achieves straightness of 0.3 mm/m or better—an exceptional standard for precision shaft applications.
The principle is straightforward: more rollers mean more contact points. More contact points mean better stress distribution during the straightening process. And better stress distribution means tighter tolerances, reduced residual stress, and more consistent results.
Why Roller Count Matters in Precision Straightening
Roller Configuration | Contact Points | Typical Straightness | Best Application |
15‑roller | Moderate | 0.5–0.8 mm/m | Standard bars and tubes |
17‑roller | High | 0.4–0.6 mm/m | Precision tubes, hydraulic cylinders |
20‑roller (FangRong) | Maximum | ≤0.3 mm/m | Precision shafts, spindles, guide rods |
The 20‑roller configuration applies alternating bending forces across a greater number of points along the shaft. This progressive correction reduces the severity of each individual bend, resulting in a smoother, more accurate final product with minimal internal stress.
The 20‑Roller Advantage for Precision Shafts
Precision shafts—used in machine tools, automation systems, hydraulic cylinders, and automotive drivetrains—require straightness that often exceeds the capability of conventional straighteners. A 0.5 mm/m deviation over a 2‑meter shaft translates to a 1 mm bow—enough to cause vibration, bearing wear, and premature failure.
FangRong’s 20‑roller straightening machines address this by:
Distributing straightening force evenly across 20 contact points
Reducing residual stress that can cause delayed distortion
Improving roundness through gentle, multi‑point correction
Delivering consistent ≤0.3 mm/m straightness for shafts up to 180 mm diameter
Technical Specifications – FangRong 20‑Roller Straightener
Parameter | Specification |
Roller configuration | 20 rollers (10+10 staggered) |
Maximum tube diameter | φ180 mm |
Maximum bar diameter | φ90 mm |
Straightness achieved | ≤0.3 mm/m (typical ≤0.2 mm/m) |
Roundness tolerance | ≤0.05 mm |
Straightening speed | 0–30 m/min (variable frequency) |
Main motor power | 37 kW |
Control system | PLC with touchscreen, recipe storage |
When Your Components Demand the Highest Precision, Trust the 20‑Roller Advantage
Applications that benefit most from the 20‑roller configuration include:
Precision shafts – machine tool spindles, motor shafts, pump shafts
Hydraulic piston rods – requiring leak‑free sealing and long service life
Linear guide rods – for smooth, friction‑free motion
Automotive drivetrain components – drive shafts, steering columns
Aerospace actuators – where reliability is non‑negotiable
FangRong provides complete machine and solution services for cold drawing, straightening, and pointing – all customized to your specifications.
Contact us to discuss your precision shaft straightening requirements and learn how the 20‑roller advantage can improve your product quality.
Know More About Us FangRong Metallurgical Equipment Manufacturer in China since 1998. Professional in Metal Straightening machine, Cold Drawing machine, Push Pointer Drawing Machine, Automatic Three Lines Drawing Machine, Thread rolling machine, Tube-end shrinking machine, Pointing Machine, Core pipe machine, Polishing Machine etc.
Follow US:
Email: frsale@dgfangrong.com frmachine001@dgfangrong.com
Whatsapp/Skype/Wechat:+8618928290716 +8613537360900
Web: https://www.fangrong-machines.com https://www.dgfangrong.com
Keywords: 20‑roller straightening machine, precision shaft straightening, 0.3mm/m straightness, multi‑roll straightener, precision shaft applications, roller count matters, FangRong straightening machine.
Comments