Name: Chrome Plated Bar
Guide Rod\ Column optical axis\ Linear Guides\Straight optical axis
Material: CK45, SAE1045, 4140, 4340, JIS45C, 20MnV6, 42CrMo
External Diameter Accuracy: f8/f7
Surface Roughness: Ra0.2~0.4um
Hard Chrome Plated Thickness:20 Micron +/-10%
Surface Hardness: HV 800 Min.
Straightness: <= 0.2/1000
Protection: Anti-rust oil outside with hard board sleeve protection.
Packing: Wooden case