Parker EX Series User Manual

67 – Pvd3665_Gb_Ex_August 2022
3.2.9. Speed ripple
The typical speed ripple for a EX motor with a resolver at 4000rpm is 3% peak to peak.
This value is given as indicative data because depending on the settings of the drive (gains
of both speed and current regulation loops, presence of filtering or not, load inertia, resistant
torque and type of sensor in use), without external load (neither external inertia nor resistant
torque).
3.2.10. Cogging torque
The typical cogging for a EX series below is the maximum value peak to peak in N.cm:
Motor
Cogging Maxi
[N.cm]
EX310
2.5
EX420
4.4
EX430
5.7
EX620
5.3
EX630
6.8
EX820
9
EX840
16
EX860
20

Parker EX Series Specifications

General

Fuel Type	Gasoline
Control Type	Electronic
Valves per Cylinder	4
Fuel System	Fuel Injected
Bore x Stroke	86 mm x 86 mm