Rockwell Automation 8520 9/Series CNC Integration Maintenance Manual Documentation Set - Manual (Page 659)

Section 13A
Connecting 8520 Digital Drive Systems
13A-25
Table 13A.O lists the 1500/2500 RPM 8500 digital servo motor options
and their specifications.
Table 13A.O
1500/2500 RPM 8500 Digital Servo Motor Options and Specifications
Specifications 1500/2500 RPM 8500 Digital Servo Motor Options
8500-A1D 8500-A2D 8500-A3D 8500-B1D 8500-B2D
Rated Output/Axis kW (HP) 0.45 (0.6) 0.85 (1.2) 1.3 (1.8) 1.8 (2.4) 2.9 (3.9)
Rated Torque kg . cm (lb . in) 29 (25) 55 (48) 85 (74) 117 (102) 190 (165)
Continuous Max. Torque kg . cm (lb . in) 30 (26) 60 (52) 90 (72) 120 (104) 230 (200)
Instantaneous Max. Torque kg . cm (lb . in) 87 (76) 1 165 (143) 1 255 (221) 1 234 (203) 1 380 (330) 1
Rated Current Arms 3.8 6.2 9.7 15 20
Rated Revolution rpm 1500
Maximum Rated Revolution rpm 2500
Torque Constant kg . cm/A (lb . in/A) 8.2 (7.1) 9.4 (8.2) 9.4 (8.2) 8.4 (7.3) 10.0 (8.7)
Rotor Inertia
(J) g . cm . s 2 (lb . in s 2 x10 -3 ) 13.8 (12.0) 24.8 (21.5) 37.4 (32.5) 68.2 (59.2) 112 (97.2)
(GD 2 /4) kg . cm 2 (lb . in 2 ) 13.5 (4.61) 24.3 (8.31) 36.7 (12.5) 66.8 (22.8) 110 (37.6)
Power Rate kW/s 6.0 12 18.9 19.7 31.5
Mechanical Time Constant ms 8.3 5.7 4.7 6.8 5.1
Electrical Time Constant ms 4.2 5.5 6.4 10.4 13.0
Number of Pole poles 8
Weight kg (lb) 10 (22) 15 (33) 21 (46) 24 (53) 32 (71)
1 These values will vary depending on the amplifier selected to operate these motors. You may need to recalculate these values based on
your amplifier selection.
Important: 8500 digital servo motor mounting dimensions start on page 13B-1.