V-Belt Sheave Idlers (Retail)
| Part Number | Browning Interchange | Belt Size | A (in) | B (in) | C (in) | D (in) | E (in) | I (in) | L (in) | Weight (lbs) |
| AK25NB | NAK25 | 4L or A | 2.50 | 21/32 | 1/2 | 1 9/16 | 5/32 | 1/4 | 3/4 | 0.4 |
| AK30NB | NAK30 | 4L or A | 3.05 | 21/32 | 1/2 | 1 9/16 | 5/32 | 1/4 | 3/4 | 0.6 |
| AK41NB | NAK41 | 4L or A | 3.95 | 3/4 | 1 | 1 7/8 | 1/16 | 5/16 | 1 | 1.1 |
| BK40NB | NBK40 | 5L or B | 3.96 | 7/8 | 1 | 1 7/8 | 1/8 | 1/4 | 1 | 1.2 |
| BK52NB | NBK52 | 5L or B | 4.96 | 7/8 | 1 | 1 7/8 | 1/8 | 1/4 | 1 | 1.6 |
