KUKA KR 13 SCARA-2 CS Detailed Explanation

1500 hour lubrication ball screw spline (upper/lower limit positions) THK AFB-LF approximately 10 g

4000 hours or 1 year replacement of corrugated pipe (CR version, executed by KUKA authorized personnel) SPP 0000-475-585

4000 hours or 1 year replacement of toothed belt A3/A4 (KUKA authorized personnel) A3: 0000-410-728, A4-1/A4-2: 0000-414-966/967

4000 hours or 1 year cable group coated with Optitemp RB2 grease, approximately 20 g

20000 hours or 5 years A1 gearbox oil change Optigear Synt. ALR 150, 0.31 L

Tighten the installation bolts within one year; Replace battery unit -

Key points for screw lubrication: Move A3 to the upper limit position (be careful not to hit the limit block) → Activate emergency stop → Remove old grease → Brush THK AFB-LF → Move it back to the lower limit position and repeat; The CR version requires first removing the shaft end cover (8 M4x12-8.8, 1.9 Nm) and applying grease to the lead screw and steel ball raceway, while checking the O-ring. Clean up excess grease and run A3/A4 empty to ensure even distribution of grease.

Tooth shaped belt tension - the most professional maintenance skill of this machine: after replacement, use a frequency meter (TSM alpha 20071-053-386) to calibrate with a tensioning fixture, move the belt and sensor 2-3 mm away from the vibration belt to read the frequency, measure three times and take the average:

Belt model new belt target frequency old belt frequency

A3 741-3GT-15 87.7–92 Hz 73.4–78.4 Hz

A4-1 405-3GT-15 209–219 Hz 175–187 Hz

A4-2 570-3GT-25 176–185 Hz 147–158 Hz

Adjust the tension screw (M8x30) until it meets the standard; A deviation of 30% or less between the adjusted fluctuation value and the table is considered normal. The calibration process must include the "motion running in" step: after adjusting A4-2, A2 axis ± 20 ° reciprocating 2-3 times, A3 axis ± 50 mm reciprocating 2-3 times, and then retesting the frequency - skipping running in and directly locking will cause tension drift after operation. In terms of assembly sequence, A4-1 must mesh with the large pulley, A4-2 must mesh with the small pulley, and the flange with the part number facing upwards. The four M6x25-12.9 pieces should not be tightened first, and A3 should be vertically moved up and down three times before being diagonally tightened step by step to 15 Nm.

The replacement of the bellows (CR version exclusive) requires a special tool Dev. KR20 split to locate the limit block at the STOP position (0000-435-961). Reversing the NILOS Ring direction will accelerate the wear of the ball bearing - this is why authorized personnel must perform maintenance on the CR version.

Early Wear Warning and Life Management

During the planning phase, five types of accelerated wear conditions must be evaluated: temperature limit or continuous operation in corrosive environments, performance limit continuous operation (such as high shaft speed), single axis high load rate, monotonic motion trajectory, and external process forces. Meet any requirement to consult KUKA. The built-in monitoring automatically shuts down when the operating limit is reached.

The unique quantitative red line of this machine: the temperature of each axis motor must not exceed 368 K (+95 ° C) - long-term high-temperature operation will directly shorten the service life of the robotic arm. For assembly lines with extremely high rhythms, it is recommended to incorporate motor temperature into the equipment health dashboard through trend monitoring in ControlStudio.

Conclusion: The KR 13 SCARA-2 CS family provides a compact solution for 3C, semiconductor, and pharmaceutical assembly with a repeatability of ± 0.025 mm/± 0.01 °, a 0.42 s cycle time, 250 N A3 process power, and a cleanroom level 5 CR version. The five key actions of an integration engineer are: verifying a 20mm steel base with a horizontal force of 1381 N according to the corresponding arm deployment position, reserving 200mm wiring space and EMC slot laying for A1 interface, calculating the fence with a Stop 0 angle of 126.53 ° according to R850 gear, writing 1500 hours of screw lubrication and 4000 hours of toothed belt frequency calibration into CMMS work orders, and replacing battery units annually to prevent encoder data loss. Incorporating this checklist into the project delivery checklist is the shortest path from installation to long-term stable operation.