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Feeder Guide

Is a Servo Feeder Retrofit Worth It on an Old Press?Oct 15,2026
A servo feeder retrofit on an old press usually pays back inside a year — on two shifts. This article breaks the project into five cost blocks, works the payback arithmetic on a 60-tonne press at 45 SPM, and lists five hidden costs that never appear on a quotation, including the CE compliance work that follows any press modification. It sets out four situations where the retrofit is the wrong spend and the four clauses that belong in the contract.
Why Does Feed Roll Pressure Drift on an NC Servo Feeder?Oct 14,2026
Short feeds, roll marks and length drift that appears late in a shift all trace back to the same component. This article separates a pressure fault from a roll surface fault and from a control fault with a ten-minute test, compares the four pressure systems in common use, and lists the four conditions where the pressure gauge reads perfectly and the feeder still slips.
How Does Strip Get Guided Into an NC Servo Feeder?Oct 13,2026
Entry guides get blamed for feed faults that start further up the line. A downstream-to-upstream setup routine for an NC servo feeder: pass line, exit guide squareness, roll gap, entry gap and a full-coil verification, with the three cases where no guide setting can help and the five numbers worth recording on the setup sheet.
Is Your NC Servo Feeder Sized for Short Feeds?Oct 12,2026
A feeder quoted at a maximum speed can still miss the part, because sizing depends on the window the press leaves open. This article works the arithmetic for feed length, stroke rate and available window, including a worked example at 60 mm and 200 SPM. It shows why shorter feeds are harder, and where the formula stops predicting.
How Much Drift Does a Loose Servo Feeder Coupling Cause?Oct 10,2026
A bracket cell drifted out of tolerance for three weeks while the control reported a perfect feed length. This field case traces 3 percent scrap to 0.15 mm of lash in an elastomer encoder coupling, shows the five checks that isolated it in ninety minutes, and explains why the fault is invisible until the drive reverses under load.
Which Roll Coating Suits Your NC Servo Feeder?Oct 9,2026
Two identical NC servo feeders can hold different accuracy because of the surface of their feed rolls. This guide compares hardened steel, polyurethane, hard chrome and tungsten carbide on grip, marking and wear, gives expected stroke life for each, and explains how to write roll coating into a purchase order. It also covers five faults a coating change cannot fix.
How Much Time Does NC Servo Feeder Commissioning Take?Oct 7,2026
A single-speed NC servo feeder takes three to four days to commission properly, and a high-speed line with servo pilot release takes five to six. This article walks the eight steps in order with a time budget.
Why Does Coolant Mist Cut NC Servo Feeder Accuracy?Oct 6,2026
This field case traces the loss from a failing hole-position gauge back to a tacky film on the feed rolls, sets out the four-point check that found it, and states what an NC servo feeder cannot recover by adjustment.
How to Time an NC Servo Feeder to a Press Stroke?Oct 3,2026
A line rated at 300 strokes a minute would not hold feed length above 180, because the setting sheet had been copied from a 150 SPM job. This is the six-step method for timing an NC servo feeder to a press.
Is a Dual-Drive NC Servo Feeder Worth It on Wide Coil?Sep 26,2026
Wide coil exposes a weakness that narrow strip hides: one driven roll pair grips the centre and lets the edges float. This compares single-drive and dual-drive NC servo feeder builds on grip, flatness etc.
Why Does Feed Acceleration Limit NC Servo Feeder Speed?Sep 23,2026
Two identical feeders, one holding tolerance at 200 strokes a minute and one losing 0.3 mm above 140, differ in acceleration demand rather than motor size. This works the index time budget on a 55 mm feed...
How Much Loop Depth Does an NC Servo Feeder Need?Sep 21,2026
The free loop between the coil and the feeder is a buffer with a capacity measured in millimetres of strip. This is the sizing arithmetic on a 2.0 mm strip at 120 strokes a minute.
Can an NC Servo Feeder Run Narrow Strip Without Twisting?Sep 20,2026
Narrow strip has a fraction of the torsional stiffness of wide strip, so the same machine behaves differently. This is the five-step setup that keeps 60 mm strip tracking, what each failure mode costs in speed.
Why Does an NC Servo Feeder Slip as the Coil Empties?Sep 18,2026
Slip that starts in the last third of every coil is a load problem rather than a wear problem. Two mechanisms raise the load as the coil pays down, four causes are separated by one speed test, and five fixes that hold.
How Do You Hold Feed Accuracy on a Coil Line? An Error Budget From Decoiler to DieSep 18,2026
Feed accuracy is not a single number from a specification sheet. It is a budget shared by servo positioning, roll slip, loop and back tension, lateral position and pilot release timing. This guide breaks down the error sources by typical contribution and cost of reduction, explains what the servo axis can and cannot control, and sets out the verification tests that predict line behaviour.