TYPE：KR/KR-2
NAME：gravity return idler
This type of gravity return idler is used as support idler when belt cycles.
Ther are two types,telescope idler and spiral idler.
The quantities of return is based on the 1/3 of gravity carry roller.
>>details
| Model | belt W | d | l | m | A | H | B | n | O | a×b |
| KR-400 | 400 | 89.1 | 460 | 640 | 690 | 110 | 120 | 60 | 14.5 | 15×25 |
| KR-450 | 450 | 89.1 | 510 | 690 | 740 | 110 | 120 | 60 | 14.5 | 15×25 |
| KR-500 | 500 | 89.1 | 560 | 740 | 790 | 110 | 120 | 60 | 14.5 | 15×25 |
| KR-600 | 600 | 89.1 | 660 | 840 | 890 | 110 | 120 | 60 | 14.5 | 15×25 |
| KR-750 | 750 | 114 | 850 | 1040 | 1090 | 110 | 120 | 60 | 14.5 | 15×25 |
| KR-900 | 900 | 114 | 1000 | 1190 | 1240 | 110 | 120 | 60 | 14.5 | 15×25 |
| KR-1050 | 1050 | 140 | 1150 | 1340 | 1390 | 130 | 150 | 100 | 19 | 15×25 |
| KR-1200 | 1200 | 140 | 1300 | 1490 | 1540 | 130 | 150 | 100 | 19 | 15×25 |
| KR-1400 | 1400 | 165 | 1530 | 1730 | 1790 | 160 | 180 | 120 | 23 | 18×30 |
| KR-1600 | 1600 | 165 | 1730 | 1930 | 1990 | 160 | 180 | 120 | 23 | 18×30 |
two trough gravity return idlers
| Model | belt W | d | l | m | A | H | B | n | a×b |
| KR-2-400 | 400 | 89.1 | 460 | 640 | 690 | 110 | 110 | 60 | 15×25 |
| KR-2-450 | 450 | 89.1 | 510 | 690 | 740 | 110 | 110 | 60 | 15×25 |
| KR-2-500 | 500 | 89.1 | 560 | 740 | 790 | 110 | 110 | 60 | 15×25 |
| KR-2-600 | 600 | 89.1 | 660 | 840 | 890 | 110 | 110 | 60 | 15×25 |
| KR-2-750 | 750 | 114 | 850 | 1040 | 1090 | 110 | 110 | 60 | 15×25 |
| KR-2-900 | 900 | 114 | 1000 | 1190 | 1240 | 110 | 110 | 60 | 15×25 |
