Balance Chain
How to inspect lifting lugs for the spindle head balance chain
- Perform an inspection once a year.Timely inspections are recommended when close to wear limit.
- Move the spindle head (Y-axis) to the measurement position (lower limit).
- Identify the part of the chain that runs on the pulley most. (the most used part within the processing range)
- If the L2 length (6 pitch length) matches one in the table below, replacement is necessary.
| Machine type |
Normal pitch |
No. of pitches measured |
Normal length |
Value compared |
| BTD-200Q, 200QE |
25.4 |
6 |
152.4 |
154.7 |
| BTD-200QF |
31.75 |
6 |
190.5 |
196.2 |
| BTD-11.R16, R16 |
25.4 |
6 |
152.4 |
154.7 |
| BTD-11E.R16, R16 |
25.4 |
6 |
152.4 |
154.7 |
| BTD-13.R22, 13F.R22 |
31.75 |
6 |
190.5 |
196.2 |
| BTD-110.R13 |
31.75 |
6 |
190.5 |
196.2 |
| BTD-110.R16 |
31.75 |
6 |
190.5 |
196.2 |
| BP-110.R16 |
31.75 |
6 |
190.5 |
194.3 |
| BP-110.P20 |
31.75 |
6 |
190.5 |
194.3 |
| BP-110.P25 |
31.75 |
6 |
190.5 |
194.3 |
| BP-130.P40 |
31.75 |
6 |
190.5 |
194.3 |
| BSF |
63.5 |
6 |
381 |
392.4 |
| 50.8 |
6 |
304.8 |
313.9 |
| BF |
38.1 |
6 |
228.6 |
235.5 |
| BFT |
25.4 |
6 |
152.4 |
157 |
| BT |
25.4 |
6 |
152.4 |
157 |
| BMC |
31.75 |
6 |
190.5 |
196.2 |
| BTN |
31.75 |
6 |
190.5 |
196.2 |
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