Does the cycle include loading and unloading?

Yes. Time the repeated full tube cycle, including loading, bending, indexing and unloading.

Where do I put mandrel lubrication time?

Include recurring lubrication in observed production time. Put lubrication performed only during the tool change in setup time.

Can I use the machine bend speed?

No. A bend speed omits indexing and handling. Use completed tubes and the time measured for their full production sequence.

Does a shorter batch reduce setup time?

No. The entered setup time is charged once even when the planned tube quantity is smaller.

Tube, Pipe & Profile Forming calculator

Mandrel Bend Cycle Time Calculator

Find the observed full cycle per bent tube and the time needed for your next batch. Enter a timed completed-tube trial, separate setup time and your reserved machine hours.

What this calculator does

Measure a complete tube bending cycle and check whether the next batch fits its reserved bender time.

Formula used

Tube cycle (s) = observed production minutes × 60 ÷ completed tubes
Production hours = tube cycle × planned tubes ÷ 3,600
Batch hours = production hours + setup minutes ÷ 60
Remaining hours = reserved hours − batch hours

Inputs explained

Observed Completed Tubes: Completed tubes from the timed trial or production log.
Observed Production Time: Timed loading, bending, indexing and unloading; exclude separate setup.
Batch Setup Time: Logged tooling change and first-piece approval time.
Planned Batch Tubes: Tube quantity on the batch order.
Reserved Bender Time: Machine hours reserved for this batch, including setup.

How to use the result

Best suited to bender reservation Planning, tool change quoting.
A different bend sequence, material or handling method needs a new timed trial.

Current U.S. benchmarks

The producer price index for steel mill products stands at 381.162 (BLS, Aug 2026), up 23.4% from a year earlier. Quotes priced off last quarter's material cost miss this move.

Common questions

Does the cycle include loading and unloading? Yes. Time the repeated full tube cycle, including loading, bending, indexing and unloading.
Where do I put mandrel lubrication time? Include recurring lubrication in observed production time. Put lubrication performed only during the tool change in setup time.
Can I use the machine bend speed? No. A bend speed omits indexing and handling. Use completed tubes and the time measured for their full production sequence.
Does a shorter batch reduce setup time? No. The entered setup time is charged once even when the planned tube quantity is smaller.

Last reviewed 2026-10-06.