Understanding the Difference Between Total Height and Net Lifting Height of a Scissor Lift

When discussing a scissor lift project with customers, one common misunderstanding is the difference between total height and net lifting height.

Although the two terms sound similar, confusing them can create serious problems during production and installation.

What Is Net Lifting Height?

Net lifting height means the actual vertical travel distance of the platform from its lowered position to its fully raised position.

For example:

• Lowered platform height: 0.8 m
• Fully raised platform height: 4.8 m

Then:

• Net lifting height = 4.0 m

This is the effective lifting movement of the scissor lift.

What Is Total Height?

Total height refers to the final maximum platform height after lifting.

Using the same example:

• Lowered height: 0.8 m
• Net lifting height: 4.0 m

Therefore:

• Total height = 4.8 m

In simple words:

Total Height = Net Lifting Height + Lowered Height

 

Important Detail About Single Scissor Structure

For single-stage scissor lift structures, there is another important mechanical detail.

In theory, the scissor arms could fully close together. However, if the scissor structure is completely folded flat, the hydraulic cylinder would need to generate extremely large starting force to begin lifting.

Because of this, most single-stage scissor lifts are designed with support blocks or structural spacing that keep the lift slightly higher than the fully collapsed position.

This design greatly reduces the starting load on the hydraulic cylinder and improves:

• Starting efficiency
• Hydraulic system lifespan
• Stability during lifting
• Overall mechanical reliability

Therefore, the actual minimum height of a single scissor lift is usually slightly higher than the fully folded theoretical height.

Why Misunderstanding These Heights Causes Serious Problems

This is one of the most important points during communication between supplier and customer.

In many lift projects, the final designed maximum height is usually only about:

• 10–20 cm higher than the agreed specification.

If the customer accidentally treats net lifting height as total height, the final platform height after production may be significantly lower than expected.

For example:

Customer expects:

• Platform final height: 4.5 m

But supplier interprets:

• Net lifting height: 4.5 m

If the lowered height is 0.8 m, the actual total height becomes:

• 5.3 m

Or the opposite situation may happen:

• Supplier designs total height as 4.5 m
• Actual net lifting height becomes only 3.7 m

This can create major issues including:

• Installation failure
• Inability to reach working position
• Site operation problems
• Costly redesign or modification

Conclusion

Before designing or ordering a scissor lift, it is very important to clearly confirm:

• Lowered height
• Net lifting height
• Total platform height

Clear communication avoids production mistakes and ensures the lift will meet the actual working requirements.

At Beacon Industries, we always confirm all lifting dimensions carefully before production to avoid misunderstandings and ensure every lift matches the customer’s real application needs.