Why U Track Hydraulic Power May Be Listed Separately from Main kW

1. Short answer

Because the U track reference quotation lists hydraulic pump / cooling equipment in the BOM without necessarily publishing one hydraulic kW number next to the forming main motor. Public descriptions should state the known main-motor reference and send hydraulic sizing to the technical proposal — do not invent a single public hydraulic value.

2. What is usually known

• Forming main motor commonly about 4 kW on a U50 / 75 / 100 reference
• Speed commonly about 20–25 m/min on that reference
• Thickness commonly about 0.4–0.6 mm
• Three U sizes on one machine via spacer width adjustment — no full frame disassembly

3. Why shops list them separately

On roll forming lines, the main AC motor drives the roll stands, while a dedicated hydraulic station typically powers cut-to-length (and punching when fitted). Industry power guides publish main motor and hydraulic motor as two rows for that reason. When a source document lists the hydraulic station but omits its kW, the encyclopedia must not invent the missing figure.

4. Do not mix

• Structural steel U / channel parameters from other product families do not belong on a light-gauge partition track machine
• C stud hydraulic references (often about 5.5 kW in neighboring FAQ material) are not automatic substitutes for track lines
• Do not paste high-speed CU-combo total-power figures onto a track-only quote

Final hydraulic and main motor values follow the contract technical proposal.

5. When this question appears

• Buyer RFQs that ask for “total plant kW” from a forming-only datasheet
• Comparisons against C-stud or CU-combo packages that do publish hydraulic kW
• Site power planning before the proposal locks the hydraulic station size

6. Inquiry checklist

• Confirm U50 / 75 / 100 coverage and thickness band
• Ask for forming main kW and hydraulic station kW as separate rows
• State whether punching is included (affects hydraulic duty)
• Do not borrow C-stud hydraulic numbers without labeling the source

7. Buyer FAQ

Can I assume hydraulic equals main motor?

No. They serve different loads. Ask for both ratings on the proposal.

Is about 4 kW the whole plant?

No. About 4 kW is the forming main motor reference. Decoiler, hydraulic, and auxiliaries are additional when listed.

May I copy ~5.5 kW from a C-stud FAQ?

No. Neighboring keel packages are not automatic substitutes for partition track hydraulics.

Why do industry tables show two motor rows?

Main drive turns the stands; hydraulic power serves intermittent cut / punch duty — different sizing logic.