| Part | A | B | C | L | PL | |
| Number | Dim | Dim | Dim | Dim | Dim | Pitch |
| R401 | .500 | .500 | ||||
| R402 | .750 | .750 | ||||
| R403 | 1.000 | 1.000 | ||||
| R404 | 1.250 | 1.250 | ||||
| R405 | 1.500 | 1.500 | Please | Specify | See | Please |
| R406 | 1.750 | 1.750 | When | Ordering | Note | Specify |
| R407 | 2.000 | 2.000 | Below | When | ||
| R408 | 2.500 | 2.500 | Ordering | |||
| R409 | 3.000 | 3.000 | ||||
| R410 | 3.250 | 3.250 | ||||
| R411 | 3.500 | 3.500 | ||||
| R412 | 3.750 | 3.750 | ||||
| R413 | 4.000 | 4.000 | ||||
| R414 | 4.250 | 4.250 | ||||
| R415 | 4.500 | 4.500 |
*Note: Combination pitches are available only in 20 degree
pressure angle.
All dimensions are in inches.
| Formula to Calculate "PL" Dimension |
| PL = B - (1/Pitch) |
| Example (for "B" = 1.25; Pitch = 8): 1.125 = (1.000) - .125 - (.125) |
| R401 | - | 0.00 | - | 18.00 | - | 20 | - | 8 |
| Series # | Uncut Length "C" | Overall | Pressure | Pitch* 3 D.P. thru | ||||
| (enter 0 for | Length "L" | Angle* | 48 D.P. | |||||
| teeth full length) | 14-1/2 or 20 | combination, | ||||||
| fractional | ||||||||
| & module |