Stober 1 Servo Gear Units

PHKX/PHK/PHQK Series: RIGHT ANGLE – Flange Output
PHKX Permissible Output Shaft Load and Tilting Moments*
Unit
Size
Z 2 F 2AMAX F 2R F 2RB M 2K M 2KB C 2K
mm N N N Nm Nm Nm/arcmin
PH3 62 1650 1613 1613 100 100 53
PH4 84 2150 3095 3571 260 300 160
PH5 97 4150 4536 4897 440 475 380
PH7 88 6150 17,045 17,045 1500 1500 500
PH8 126 10,050 27,778 27,778 3500 3500 1550
PH9 155 33,000 48,387 70,968 7500 11,000 7500
PH10 171 50,000 51,462 73,099 8800 12,500 9500
PHK/PHQK Permissible Output Shaft Load and Tilting Moments*
Unit
Z 2 F 2AMAX F 2R F 2RB M 2K M 2KB C 2K
Size
mm N N N Nm Nm Nm/arcmin
PH5 97 4150 4536 4897 440 475 380
PH7 88 6150 17,045 17,045 1500 1500 500
PH8 126 10,050 27,778 27,778 3500 3500 1550
PH9 155 33,000 48,387 70,968 7500 11,000 7500
PH10 171 50,000 51,462 73,099 8800 12,500 9500
PH11 231 60,000 47,619 60,606 11,000 14,000 9500
PH12 281 70,000 53,380 71,040 15,000 20,000 14,000
* Refer to illustration and definitions below.
During EMERGENCY OFF operation (maximum stops per gearhead = 1000) the permissible values in the table for F 2A
, F 2R
, and M 2K
can be multiplied by a factor of 2.
Permissible Motor Tilting Torque
The permissible tilting torque of the
F
motor attached to the gear unit is
a result of the static and dynamic
load “F” from the motor weight,
mass acceleration, and vibration
multiplied by the distance from the
center of gravity “Is” of the motor.
M 1k = F × I s < M 1K
PHKX/PHK/PHQK Series Load/Life/Speed Calculations
The permissible load and tilting moment values are based on an output speed of
100 RPM. For higher speeds the following applies, where n 2
is the desired speed:
F2AX =
F 2A
3 n 2
100
M 2KX
=
The application output tilting moment should be determined by the following
formula:
2 • F 2a
• y 2
+ F 2rb
• (x 2
+ z 2
)
M 2A
= < M 1000
2KB
3 n 2b1
• t b1
• M 2kb1
3
+...+ n 2bn
• t bn
• M 2kbn
3
M 2ka
= < M 2K
n2b1 • t b1
+...+ n 2bn
• t bn
Is
M 2K
3 n 2
100
M 1K
PHK/PHQK (ME Motor Adapters) PHKX (MF Motor Adapters)
ME10 ME20 ME30 ME40 ME50 PHKX3 PHKX4 PHKX5 PHKX7
Nm 25 60 125 250 600 12 24 50 100
All formulas shown are based on METRIC values
Upper case letters are permissible values. Lower case letters are for existing values.
y 2
–F 2a
+F 2r
–F 2r
+F 2a
Where:
F 2a Axial Load at Output Shaft M 2K Rated Tilting Torque
F 2A Permissible Axial Load M 2k Equivalent Tilting Load
F 2r Radial Load at Output Shaft M 2KB Acceleration Tilting Torque
F 2R Permissible Radial Load z 2 Distance Factor
F 2RB
3 n 2b1
• t b1
• F 2rb1
3
+...+ n 2bn
• t bn
• F 2rbn
3
F 2r
= < F 2R
n2b1 • t b1
+...+ n 2bn
• t bn
Acceleration Permissible Radial Load
254 Servo Gear Units V.28
x 2
z 2
The hours of life (L h
) of the unit can be determined by the following formula:
bearing life for duty cycle < 40%
L h
> 10,000 hours if M 2K
/M 2A
< 1.25 and > 1
L h
> 20,000 hours if M 2K
/M 2A
> 1.25 and > 1.5
L h
> 30,000 hours if M 2K
/M 2A
< 1.5
bearing life for duty cycle > 40%
L hA
= L h
40%
( Duty Cycle )
800.711.3588 • www.stober.com