8
Main specifications
This section covers the main specifications.
Refer to the catalog for detailed specifications and torque characteristics.
Motor specifications
Standard type
• The maximum holding torque represents the value of 5-phase excitation at the rated
current of the motor.
When the motor is combined with a dedicated driver, the value will decrease in
proportion to the motor’s stopped-state current setting.
Single shaft
Double shaft
Maximum holding
torque oz-in (N·m)
Rotor inertia
oz-in
2
(kg·m
2
)
Basic step angle
Rated current
A/phase
Mass lb. (kg)
Insulation class
Ambient
temperature range
PK545NAWA
PK545NBWA
34 (0.24)
0.37
(68 × 10
-7
)
0.75
0.77 (0.35)
PK564NAWA
PK564NBWA
59 (0.42)
0.96
(175 × 10
-7
)
1.32 (0.6)
PK566NAWA
PK566NBWA
117 (0.83)
1.53
(280 × 10
-7
)
1.4
1.76 (0.8)
PK569NAWA
PK569NBWA
230 (1.66)
3.1
(560 × 10
-7
)
2.86 (1.3)
Class B [266°F (130°C)] UL/CSA: Class A [221°F (105°C)]
+14°F to +122°F (-10°C to +50°C)
0.72°
Motor
model
Single shaft
Double shaft
Maximum holding
torque oz-in (N·m)
Rotor inertia
oz-in
2
(kg·m
2
)
Basic step angle
Rated current
A/phase
Mass lb. (kg)
Insulation class
Ambient
temperature range
PK513PA
PK513PB
3.12 (0.022)
0.014
(2.6 × 10
-7
)
0.35
0.11 (0.05)
PMM33AH2
PMM33BH2
4.6 (0.033)
0.049
(9 × 10
-7
)
0.22 (0.1)
PMM35AH2
PMM35BH2
8.5 (0.06)
0.098
(18 × 10
-7
)
0.72°
0.374(0.17)
PK543NAWA
PK543NBWA
18.4 (0.13)
0.191
(35 × 10
-7
)
0.462 (0.21)
Motor
model
PK544NAWA
PK544NBWA
25 (0.18)
0.3
(54 × 10
-7
)
0.594 (0.27)
0.75
+14°F to +122°F (-10°C to +50°C)
Class B [266°F (130°C)]
UL/CSA: Class A
[221°F (105°C)]
Class B [266°F(130°C)]
