Return Spring Corner Cutting Machine 195mm – 20mm diameter extension spring

NN15-Return Spring for Corner Cutting Machine 195mm

SKU: NN15

Key Specs

Natural Length: Coil Diameter
Coil Diameter: 20 mm
Spring Type: Extension spring
End Type: Formed hooks (both ends)
Material: Spring Steel
Application: Corner cutting machine (切角机)

MOQ: 100•Lead time: 7-10days•Custom packaging: Available

The Return Spring for Corner Cutting Machine (弹簧) is the extension spring that pulls the cutting blade back to its home position after each cut. At 195mm natural length and 20mm diameter, it delivers the correct return force for standard corner cutting machines.

Specification	Value
Natural Length	195 mm (un-stretched)
Coil Diameter	20 mm
Spring Type	Extension spring
End Type	Formed hooks (both ends)
Material	Spring Steel

What is the natural (un-stretched) length of this spring?

The spring measures 195mm in its natural, un-stretched state. This is the measurement stated in the product specification.

What end type does this spring use?

The spring has formed hook ends on both sides, allowing it to engage the hook points on the corner cutting machine's blade arm and frame without additional hardware.

How do I know when the spring needs replacing?

Replace the return spring when the blade no longer returns cleanly to its home position, when you see visible set (permanent elongation) in the coil, or when any coil is cracked or separated.

Return Spring for Corner Cutting Machine 195mm – Blade Return Extension Spring

The Return Spring for Corner Cutting Machine 195mm is a precision-wound extension spring that performs the essential task of returning the cutting blade to its rest position after every miter cut. Without a correctly specified return spring, blade retraction becomes sluggish, slowing production and increasing operator fatigue.

Physical Specifications

Natural length (un-stretched): 195mm. Coil outer diameter: 20mm. End type: formed hooks on both ends. Manufactured from spring steel wire and heat-treated for consistent modulus of elasticity and fatigue resistance.

Why Spring Quality Matters

An inferior Return Spring for Corner Cutting Machine 195mm will suffer early set — permanent elongation that reduces return force — after only a few thousand cuts. This causes progressive blade drag and eventually requires the operator to manually pull the blade back, which is inefficient and unsafe.

Installation

Hook one end to the blade arm attachment point and the other end to the machine frame anchor. Ensure the spring is oriented so its natural recoil direction aligns with the blade’s return path. Do not stretch the spring beyond its elastic limit during installation.

Replacement Frequency

In a shop cutting 100+ frames per day, inspect the return spring weekly. Replace every 6 months as part of a preventive maintenance schedule, or immediately upon any sign of coil damage or permanent set.

Also service your cutting machine with a new Roller and Positioning Block.