i got a toshiba tb6560ahq of ebay and brought 4 stepper motors model number zapp.ltd sy60sth86-3009bf motors only run at 123 rpm 1/8 votage at 15v 19v or 24v still same rpm serial 1.5 amps 2.25 amps or pareral 3.5 amps still same speed change at 1/2 490 rpm

trying at get 1000rpm at 1/8 24v 1.5a

motor spec Step Angle1.8 DegStep Angle Accuracy5% (full step, no load) Resistance Accuracy 10%Inductance Accuracy20%Temperature Rise80OCMax.(rated current,2 phase on)Ambient Temperature-20OC~+50OCInsulation Resistance100M Min. ,500VDC Dielectric Strength500VAC for one minute Shaft Radial Play0.02Max. (450 g-load) Shaft Axial Play0.08Max. (450 g-load) Max. radial force75N (20mm from the flange) Max. axial force15NRotationCW( See from Front Flange)

Part number
Wiring
Voltage
Current
(phase)
Inductance
(phase)
Holding
Torque
Weight
Rotor
Inertia
V
A
mH
Nm
KG
g.cm2
SY60STH86-3008BF
Unipolar
3.9
3
3.2
2.15
1.4
840
Bipolar (P)
2.73
4.2
3.2
3
Bipolar (S)
5.46
2.1
12.8
3





can anyone help thanks, phil