Standard Keyseats
| Bore Range | Keyseat |
| 1/2″-9/16″ | 1/8″x1/16″ |
| 5/8-7/8 | 3/16×3/32 |
| 15/16-1 1/4 | 1/4×1/8 |
| 1 5/16-1 3/8 | 5/16×5/32 |
| 1 7/16-1 3/4 | 3/8×3/16 |
| 1 13/16-2 1/4 | 1/2×1/4 |
| 2 5/16-2 3/4 | 5/8×5/16 |
| 2 13/16-3 1/4 | 3/4×3/8 |
| 3 3/8-3 3/4 | 7/8×7/16 |
1 3/8″ Bore Bushing also available with 3/8×3/16″ Keyway.
| 1 GROOVE, F = 7/8″(1B34SH-1B70SDS) F = 1″ (1B74SDS-1B200SK) | ||||||||||
| Part No. | Bush | Bore Range | Type | D.D. | O.D. | E | L | M | Wt.Less Bush. | |
| “B” Belts | “A”Belts | |||||||||
| 1B34SH | SH | 1/2″ – 1 5/8″ | E-Sol. | 3.4″ | 3.0″ | 3.75″ | 7/32″ | 1 5/16″ | 21/32″ | 2.00 |
| 1B36SH | SH | 1/2 – 1 5/8 | D-Sol. | 3.60 | 3.20 | 3.95 | 19/32 | 1 5/16 | 5/32 | 2.20 |
| 1B38SH | SH | 1/2 – 1 5/8 | D-Sol. | 3.80 | 3.40 | 4.15 | 19/32 | 1 5/16 | 5/32 | 2.40 |
| 1B40SH | SH | 1/2 – 1 5/8 | C-Sol. | 4.00 | 3.60 | 4.35 | 11/32 | 1 5/16 | 3/32 | 2.70 |
| 1B42SH | SH | 1/2 – 1 5/8 | C-Sol. | 4.20 | 3.80 | 4.55 | 11/32 | 1 5/16 | 3/32 | 2.90 |
| 1B44SH | SH | 1/2 – 1 5/8 | C-Sol. | 4.40 | 4.00 | 4.75 | 11/32 | 1 5/16 | 3/32 | 3.40 |
| 1B46SDS | SDS | 1/2 – 2 | C-Sol. | 4.60 | 4.20 | 4.95 | 11/32 | 1 5/16 | 3/32 | 4.00 |
| 1B48SDS | SDS | 1/2 – 2 | C-Sol. | 4.80 | 4.40 | 5.15 | 11/32 | 1 5/16 | 3/32 | 4.30 |
| 1B50SDS | SDS | 1/2 – 2 | C-Sol. | 5.00 | 4.60 | 5.35 | 11/32 | 1 5/16 | 3/32 | 4.70 |
| 1B52SDS | SDS | 1/2 – 2 | C-Sol. | 5.20 | 4.80 | 5.55 | 11/32 | 1 5/16 | 3/32 | 5.00 |
| 1B54SDS | SDS | 1/2 – 2 | C-Sol. | 5.40 | 5.00 | 5.75 | 11/32 | 1 5/16 | 3/32 | 5.30 |
| 1B56SDS | SDS | 1/2 – 2 | C-Sol. | 5.60 | 5.20 | 5.95 | 11/32 | 1 5/16 | 3/32 | 5.60 |
| 1B58SDS | SDS | 1/2 – 2 | C-Web | 5.80 | 5.40 | 6.15 | 11/32 | 1 5/16 | 3/32 | 5.90 |
| 1B60SDS | SDS | 1/2 – 2 | C-Web | 6.00 | 5.60 | 6.35 | 11/32 | 1 5/16 | 3/32 | 6.20 |
| 1B62SDS | SDS | 1/2 – 2 | C-Web | 6.20 | 5.80 | 6.55 | 11/32 | 1 5/16 | 3/32 | 6.50 |
| 1B64SDS | SDS | 1/2 – 2 | C-Web | 6.40 | 6.00 | 6.75 | 11/32 | 1 5/16 | 3/32 | 6.80 |
| 1B66SDS | SDS | 1/2 – 2 | C-Web | 6.60 | 6.20 | 6.95 | 11/32 | 1 5/16 | 3/32 | 7.20 |
| 1B68SDS | SDS | 1/2 – 2 | C-Arm | 6.80 | 6.40 | 7.15 | 11/32 | 1 5/16 | 3/32 | 7.50 |
| 1B70SDS | SDS | 1/2 – 2 | C-Arm | 7.00 | 6.60 | 7.35 | 11/32 | 1 5/16 | 3/32 | 7.80 |
| 1B74SDS | SDS | 1/2 – 2 | D-Arm | 7.40 | 7.00 | 7.75 | 17/32 | 1 5/16 | 7/32 | 8.80 |
| 1B80SDS | SDS | 1/2 – 2 | D-Arm | 8.00 | 7.60 | 8.35 | 17/32 | 1 5/16 | 7/32 | 9.60 |
| 1B86SDS | SDS | 1/2 – 2 | D-Arm | 8.60 | 8.20 | 8.95 | 17/32 | 1 5/16 | 7/32 | 10.00 |
| 1B94SDS | SDS | 1/2 – 2 | D-Arm | 9.40 | 9.00 | 9.75 | 17/32 | 1 5/16 | 7/32 | 10.50 |
| 1B110SDS | SDS | 1/2 – 2 | D-Arm | 11.00 | 10.60 | 11.35 | 17/32 | 1 5/16 | 7/32 | 11.00 |
| 1B124SDS | SDS | 1/2 – 2 | D-Arm | 12.40 | 12.00 | 12.75 | 17/32 | 1 5/16 | 7/32 | 12.00 |
| 1B136SDS | SDS | 1/2 – 2 | D-Arm | 13.60 | 13.20 | 13.95 | 17/32 | 1 5/16 | 7/32 | 14.00 |
| 1B154SK | SK | 1/2 – 2 5/8 | C-Arm | 15.40 | 15.00 | 15.75 | 21/32 | 1 15/16 | 9/32 | 16.00 |
| 1B160SK | SK | 1/2 – 2 5/8 | C-Arm | 16.00 | 15.60 | 16.35 | 21/32 | 1 15/16 | 9/32 | 16.60 |
| 1B184SK | SK | 1/2 – 2 5/8 | C-Arm | 18.40 | 18.00 | 18.75 | 21/32 | 1 15/16 | 9/32 | 18.00 |
| 1B200SK | SK | 1/2 – 2 5/8 | C-Arm | 20.00 | 19.60 | 20.35 | 21/32 | 1 15/16 | 9/32 | 20.00 |
| 2 GROOVES, F = 1 3/4″ | ||||||||||
| Part No. | Bush | Bore Range | Type | D.D. | O.D. | E | L | M | Wt.Less Bush. | |
| “B” Belts | “A”Belts | |||||||||
| 2B34SH | SH | 1/2 – 1 5/8 | E-Sol. | 3.40 | 3.00 | 3.75 | 1 3/32 | 1 5/16 | 21/32 | 3.20 |
| 2B36SH | SH | 1/2 – 1 5/8 | D-Sol. | 3.60 | 3.20 | 3.95 | 15/32 | 1 5/16 | 29/32 | 3.40 |
| 2B38SH | SH | 1/2 – 1 5/8 | D-Sol. | 3.80 | 3.40 | 4.15 | 15/32 | 1 5/16 | 29/32 | 3.90 |
| 2B40SH | SH | 1/2 – 1 5/8 | A-Sol. | 4.00 | 3.60 | 4.35 | 1/32 | 1 5/16 | 13/32 | 4.10 |
| 2B42SH | SH | 1/2 – 1 5/8 | A-Sol. | 4.20 | 3.80 | 4.55 | 1/32 | 1 5/16 | 13/32 | 4.40 |
| 2B44SH | SH | 1/2 – 1 5/8 | A-Sol. | 4.40 | 4.00 | 4.75 | 1/32 | 1 5/16 | 13/32 | 4.60 |
| 2B46SDS | SDS | 1/2 – 2 | A-Sol. | 4.60 | 4.20 | 4.95 | 1/32 | 1 5/16 | 13/32 | 5.00 |
| 2B48SDS | SDS | 1/2 – 2 | A-Sol. | 4.80 | 4.40 | 5.15 | 1/32 | 1 5/16 | 13/32 | 5.40 |
| 2B50SDS | SDS | 1/2 – 2 | A-Sol. | 5.00 | 4.60 | 5.35 | 1/32 | 1 5/16 | 13/32 | 6.00 |
| 2B52SDS | SDS | 1/2 – 2 | A-Sol. | 5.20 | 4.80 | 5.55 | 1/32 | 1 5/16 | 13/32 | 6.30 |
| 2B54SDS | SDS | 1/2 – 2 | A-Sol. | 5.40 | 5.00 | 5.75 | 1/32 | 1 5/16 | 13/32 | 6.60 |
| 2B56SDS | SDS | 1/2 – 2 | A-Web | 5.60 | 5.20 | 5.95 | 1/32 | 1 5/16 | 13/32 | 6.90 |
| 2B58SDS | SDS | 1/2 – 2 | A-Web | 5.80 | 5.40 | 6.15 | 1/32 | 1 5/16 | 13/32 | 7.20 |
| 2B60SDS | SDS | 1/2 – 2 | A-Web | 6.00 | 5.60 | 6.35 | 1/32 | 1 5/16 | 13/32 | 7.50 |
| 2B62SDS | SDS | 1/2 – 2 | A-Web | 6.20 | 5.80 | 6.55 | 1/32 | 1 5/16 | 13/32 | 7.80 |
| 2B64SDS | SDS | 1/2 – 2 | A-Web | 6.40 | 6.00 | 6.75 | 1/32 | 1 5/16 | 13/32 | 8.20 |
| 2B66SDS | SDS | 1/2 – 2 | A-Web | 6.60 | 6.20 | 6.95 | 1/32 | 1 5/16 | 13/32 | 8.60 |
| 2B68SDS | SDS | 1/2 – 2 | A-Arm | 6.80 | 6.40 | 7.15 | 1/32 | 1 5/16 | 13/32 | 9.00 |
| 2B70SK | SK | 1/2 – 2 5/8 | D-Sol. | 7.00 | 6.60 | 7.35 | 11/32 | 1 15/16 | 5/32 | 9.30 |
| 2B74SK | SK | 1/2 – 2 5/8 | D-Arm | 7.40 | 7.00 | 7.75 | 11/32 | 1 15/16 | 5/32 | 10.60 |
| 2B80SK | SK | 1/2 – 2 5/8 | D-Arm | 8.0″ | 7.6″ | 8.35″ | 11/32″ | 1 15/16″ | 5/32″ | 11.00 |
| 2B86SK | SK | 1/2 – 2 5/8 | D-Arm | 8.60 | 8.20 | 8.95 | 11/32 | 1 15/16 | 5/32 | 11.60 |
| 2B94SK | SK | 1/2 – 2 5/8 | D-Arm | 9.40 | 9.00 | 9.75 | 11/32 | 1 15/16 | 5/32 | 13.00 |
| 2B110SK | SK | 1/2 – 2 5/8 | D-Arm | 11.00 | 10.60 | 11.35 | 11/32 | 1 15/16 | 5/32 | 14.00 |
| 2B124SK | SK | 1/2 – 2 5/8 | D-Arm | 12.40 | 12.00 | 12.75 | 11/32 | 1 15/16 | 5/32 | 18.00 |
| 2B136SK | SK | 1/2 – 2 5/8 | D-Arm | 13.60 | 13.20 | 13.95 | 11/32 | 1 15/16 | 5/32 | 20.00 |
| 2B154SK | SK | 1/2 – 2 5/8 | D-Arm | 15.40 | 15.00 | 15.75 | 11/32 | 1 15/16 | 5/32 | 23.00 |
| 2B160SK | SK | 1/2 – 2 5/8 | D-Arm | 16.00 | 15.60 | 16.35 | 11/32 | 1 15/16 | 5/32 | 24.00 |
| 2B184SK | SK | 1/2 – 2 5/8 | D-Arm | 18.40 | 18.00 | 18.75 | 11/32 | 1 15/16 | 5/32 | 29.00 |
| 2B200SF | SF | 1/2 – 2 15/16 | D-Arm | 20.00 | 19.60 | 20.35 | 15/32 | 2 1/16 | 5/32 | 33.00 |
| 2B250SF | SF | 1/2 – 2 15/16 | D-Arm | 25.00 | 24.60 | 25.35 | 15/32 | 2 1/16 | 5/32 | 41.00 |
| 2B300SF | SF | 1/2 – 2 15/16 | D-Arm | 30.00 | 29.60 | 30.35 | 15/32 | 2 1/16 | 5/32 | 51.00 |
| 2B380SF | SF | 1/2 – 2 15/16 | D-Arm | 38.00 | 37.60 | 38.35 | 15/32 | 2 1/16 | 5/32 | 64.00 |
| 3 GROOVES, F = 2 1/2″ | ||||||||||
| Part No. | Bush | Bore Range | Type | D.D. | O.D. | E | L | M | Wt.Less Bush. | |
| “B” Belts | “A”Belts | |||||||||
| 3B34SH | SH | 1/2 – 1 5/8 | E-Sol. | 3.40 | 3.00 | 3.75 | 1 27/32 | 1 5/16 | 21/32 | 4.40 |
| 3B36SH | SH | 1/2 – 1 5/8 | D-Sol. | 3.60 | 3.20 | 3.95 | 15/32 | 1 5/16 | 1 21/32 | 4.70 |
| 3B38SH | SH | 1/2 – 1 5/8 | D-Sol. | 3.80 | 3.40 | 4.15 | 15/32 | 1 5/16 | 1 21/32 | 5.30 |
| 3B40SH | SH | 1/2 – 1 5/8 | D-Sol. | 4.00 | 3.60 | 4.35 | 15/32 | 1 5/16 | 1 21/32 | 5.60 |
| 3B42SH | SH | 1/2 – 1 5/8 | D-Sol. | 4.20 | 3.80 | 4.55 | 15/32 | 1 5/16 | 1 21/32 | 5.90 |
| 3B44SH | SH | 1/2 – 1 5/8 | D-Sol. | 4.40 | 4.00 | 4.75 | 15/32 | 1 5/16 | 1 21/32 | 6.30 |
| 3B46SD | SD | 1/2 – 2 | A-Sol. | 4.60 | 4.20 | 4.95 | 13/32 | 1 13/16 | 9/32 | 6.70 |
| 3B48SD | SD | 1/2 – 2 | A-Sol. | 4.80 | 4.40 | 5.15 | 13/32 | 1 13/16 | 9/32 | 7.10 |
| 3B50SD | SD | 1/2 – 2 | A-Sol. | 5.00 | 4.60 | 5.35 | 13/32 | 1 13/16 | 9/32 | 7.40 |
| 3B52SD | SD | 1/2 – 2 | A-Sol. | 5.20 | 4.80 | 5.55 | 13/32 | 1 13/16 | 9/32 | 7.80 |
| 3B54SD | SD | 1/2 – 2 | A-Sol. | 5.40 | 5.00 | 5.75 | 13/32 | 1 13/16 | 9/32 | 8.20 |
| 3B56SD | SD | 1/2 – 2 | A-Sol. | 5.60 | 5.20 | 5.95 | 13/32 | 1 13/16 | 9/32 | 8.50 |
| 3B58SD | SD | 1/2 – 2 | A-Sol. | 5.80 | 5.40 | 6.15 | 13/32 | 1 13/16 | 9/32 | 8.80 |
| 3B60SD | SD | 1/2 – 2 | A-Sol. | 6.00 | 5.60 | 6.35 | 13/32 | 1 13/16 | 9/32 | 9.10 |
| 3B62SD | SD | 1/2 – 2 | A-Sol. | 6.20 | 5.80 | 6.55 | 13/32 | 1 13/16 | 9/32 | 9.40 |
| 3B64SD | SD | 1/2 – 2 | A-Sol. | 6.40 | 6.00 | 6.75 | 13/32 | 1 13/16 | 9/32 | 9.70 |
| 3B66SD | SD | 1/2 – 2 | A-Sol. | 6.60 | 6.20 | 6.95 | 13/32 | 1 13/16 | 9/32 | 10.00 |
| 3B68SD | SD | 1/2 – 2 | B-Arm | 6.80 | 6.40 | 7.15 | 13/32 | 1 13/16 | 9/32 | 10.50 |
| 3B70SK | SK | 1/2 – 2 5/8 | D-Sol. | 7.00 | 6.60 | 7.35 | 3/32 | 1 15/16 | 21/32 | 11.00 |
| 3B74SK | SK | 1/2 – 2 5/8 | D-Arm | 7.40 | 7.00 | 7.75 | 3/32 | 1 15/16 | 21/32 | 12.00 |
| 3B80SK | SK | 1/2 – 2 5/8 | D-Arm | 8.00 | 7.60 | 8.35 | 3/32 | 1 15/16 | 21/32 | 12.50 |
| 3B86SK | SK | 1/2 – 2 5/8 | D-Arm | 8.60 | 8.20 | 8.95 | 3/32 | 1 15/16 | 21/32 | 13.00 |
| 3B94SK | SK | 1/2 – 2 5/8 | D-Arm | 9.40 | 9.00 | 9.75 | 3/32 | 1 15/16 | 21/32 | 16.00 |
| 3B110SK | SK | 1/2 – 2 5/8 | D-Arm | 11.00 | 10.60 | 11.35 | 3/32 | 1 15/16 | 21/32 | 19.00 |
| 3B124SK | SK | 1/2 – 2 5/8 | D-Arm | 12.40 | 12.00 | 12.75 | 3/32 | 1 15/16 | 21/32 | 24.00 |
| 3B136SK | SK | 1/2 – 2 5/8 | D-Arm | 13.60 | 13.20 | 13.95 | 3/32 | 1 15/16 | 21/32 | 27.00 |
| 3B154SK | SK | 1/2 – 2 5/8 | D-Arm | 15.40 | 15.00 | 15.75 | 3/32 | 1 15/16 | 21/32 | 30.00 |
| 3B160SK | SK | 1/2 – 2 5/8 | D-Arm | 16.00 | 15.60 | 16.35 | 3/32 | 1 15/16 | 21/32 | 33.00 |
| 3B184SK | SK | 1/2 – 2 5/8 | D-Arm | 18.40 | 18.00 | 18.75 | 3/32 | 1 15/16 | 21/32 | 38.00 |
| 3B200SF | SF | 1/2 – 2 15/16 | D-Arm | 20.00 | 19.60 | 20.35 | 7/32 | 2 1/16 | 21/32 | 43.00 |
| 3B250SF | SF | 1/2 – 2 15/16 | D-Arm | 25.00 | 24.60 | 25.35 | 7/32 | 2 1/16 | 21/32 | 54.00 |
| 3B300SF | SF | 1/2 – 2 15/16 | D-Arm | 30.00 | 29.60 | 30.35 | 7/32 | 2 1/16 | 21/32 | 67.00 |
| 3B380E | E | 7/8 – 3 1/2 | D-Arm | 38.00 | 37.60 | 38.35 | 17/32 | 2 3/4 | 9/32 | 90.00 |
| 4 GROOVES, F = 3 1/4″ | ||||||||||
| Part No. | Bush | Bore Range | Type | D.D. | O.D. | E | L | M | Wt.Less Bush. | |
| “B” Belts | “A”Belts | |||||||||
| 4B34SD | SD | 1/2 – 2 | E-Sol. | 3.40 | 3.00 | 3.75 | 2 15/32 | 1 13/16 | 1 1/32 | 5.50 |
| 4B36SD | SD | 1/2 – 2 | E-Sol. | 3.60 | 3.20 | 3.95 | 2 15/32 | 1 13/16 | 1 1/32 | 5.80 |
| 4B38SD | SD | 1/2 – 2 | E-Sol. | 3.80 | 3.40 | 4.15 | 2 15/32 | 1 13/16 | 1 1/32 | 6.20 |
| 4B40SD | SD | 1/2 – 2 | E-Sol. | 4.00 | 3.60 | 4.35 | 2 3/32 | 1 13/16 | 21/32 | 6.60 |
| 4B42SD | SD | 1/2 – 2 | E-Sol. | 4.20 | 3.80 | 4.55 | 2 3/32 | 1 13/16 | 21/32 | 6.90 |
| 4B44SD | SD | 1/2 – 2 | E-Sol. | 4.40 | 4.00 | 4.75 | 2 3/32 | 1 13/16 | 21/32 | 7.20 |
| 4B46SD | SD | 1/2 – 2 | A-Sol. | 4.60 | 4.20 | 4.95 | 21/32 | 1 13/16 | 25/32 | 7.60 |
| 4B48SD | SD | 1/2 – 2 | A-Sol. | 4.80 | 4.40 | 5.15 | 21/32 | 1 13/16 | 25/32 | 8.00 |
| 4B50SD | SD | 1/2 – 2 | A-Sol. | 5.00 | 4.60 | 5.35 | 21/32 | 1 13/16 | 25/32 | 8.40 |
| 4B52SD | SD | 1/2 – 2 | A-Sol. | 5.20 | 4.80 | 5.55 | 21/32 | 1 13/16 | 25/32 | 8.80 |
| 4B54SD | SD | 1/2 – 2 | A-Sol. | 5.40 | 5.40 | 5.75 | 21/32 | 1 13/16 | 25/32 | 9.20 |
| 4B56SD | SD | 1/2 – 2 | A-Sol. | 5.60 | 5.20 | 5.95 | 21/32 | 1 13/16 | 25/32 | 9.60 |
| 4B58SD | SD | 1/2 – 2 | A-Sol. | 5.80 | 5.40 | 6.15 | 21/32 | 1 13/16 | 25/32 | 10.00 |
| 4B60SD | SD | 1/2 – 2 | A-Sol. | 6.00 | 5.60 | 6.35 | 21/32 | 1 13/16 | 25/32 | 10.40 |
| 4B62SD | SD | 1/2 – 2 | A-Sol. | 6.20 | 5.80 | 6.55 | 21/32 | 1 13/16 | 25/32 | 10.80 |
| 4B64SD | SD | 1/2 – 2 | A-Sol. | 6.40 | 6.00 | 6.75 | 21/32 | 1 13/16 | 25/32 | 12.00 |
| 4B66SD | SD | 1/2 – 2 | A-Sol. | 6.60 | 6.20 | 6.95 | 21/32 | 1 13/16 | 25/32 | 12.40 |
| 4B68SD | SD | 1/2 – 2 | A-Arm | 6.80 | 6.40 | 7.15 | 21/32 | 1 13/16 | 25/32 | 13.00 |
| 4B70SK | SK | 1/2 – 2 5/8 | A-Sol. | 7.00 | 6.60 | 7.35 | 7/32 | 1 15/16 | 1 3/32 | 13.50 |
| 4B74SK | SK | 1/2 – 2 5/8 | A-Arm | 7.40 | 7.00 | 7.75 | 7/32 | 1 15/16 | 1 3/32 | 14.00 |
| 4B80SK | SK | 1/2 – 2 5/8 | A-Arm | 8.00 | 7.60 | 8.35 | 7/32 | 1 15/16 | 1 3/32 | 15.50 |
| 4B86SK | SK | 1/2 – 2 5/8 | A-Arm | 8.60 | 8.20 | 8.95 | 7/32 | 1 15/16 | 1 3/32 | 17.00 |
| 4B94SK | SK | 1/2 – 2 5/8 | A-Arm | 9.40 | 9.00 | 9.75 | 7/32 | 1 15/16 | 1 3/32 | 19.00 |
| 4B110SK | SK | 1/2 – 2 5/8 | A-Arm | 11.00 | 10.60 | 11.35 | 7/32 | 1 15/16 | 1 3/32 | 22.00 |
| 4B124SK | SK | 1/2 – 2 5/8 | A-Arm | 12.40 | 12.00 | 12.75 | 7/32 | 1 15/16 | 1 3/32 | 29.00 |
| 4B136SK | SK | 1/2 – 2 5/8 | A-Arm | 13.60 | 13.20 | 13.95 | 7/32 | 1 15/16 | 1 3/32 | 34.00 |
| 4B154SF | SF | 1/2 – 2 15/16 | A-Arm | 15.40 | 15.00 | 15.75 | 5/32 | 2 1/16 | 1 1/32 | 39.00 |
| 4B160SF | SF | 1/2 – 2 15/16 | A-Arm | 16.00 | 15.60 | 16.35 | 5/32 | 2 1/16 | 1 1/32 | 42.00 |
| 4B184SF | SF | 1/2 – 2 15/16 | A-Arm | 18.40 | 18.00 | 18.75 | 5/32 | 2 1/16 | 1 1/32 | 47.00 |
| 4B200SF | SF | 1/2 – 2 15/16 | A-Arm | 20.00 | 19.60 | 20.35 | 5/32 | 2 1/16 | 1 1/32 | 51.00 |
| 4B250E | E | 7/8 – 3 1/2 | D-Arm | 25.00 | 24.60 | 25.35 | 5/32 | 2 3/4 | 21/32 | 73.00 |
| 4B300E | E | 7/8 – 3 1/2 | D-Arm | 30.00 | 29.60 | 30.35 | 5/32 | 2 3/4 | 21/32 | 86.00 |
| 4B380E | E | 7/8 – 3 1/2 | D-Arm | 38.00 | 37.60 | 38.35 | 5/32 | 2 3/4 | 21/32 | 109.00 |
| 5 GROOVES, F = 4″ | ||||||||||
| Part No. | Bush | Bore Range | Type | D.D. | O.D. | E | L | M | Wt.Less Bush. | |
| “B” Belts | “A”Belts | |||||||||
| 5B34SD | SD | 1/2″ – 2″ | E-Sol. | 3.4″ | 3.0″ | 3.75″ | 3 7/32″ | 1 13/16″ | 1 1/32″ | 6.10 |
| 5B36SD | SD | 1/2 – 2 | E-Sol. | 3.60 | 3.20 | 3.95 | 3 7/32 | 1 13/16 | 1 1/32 | 6.60 |
| 5B38SD | SD | 1/2 – 2 | E-Sol. | 3.80 | 3.40 | 4.15 | 3 7/32 | 1 13/16 | 1 1/32 | 7.10 |
| 5B40SD | SD | 1/2 – 2 | E-Sol. | 4.00 | 3.60 | 4.35 | 2 27/32 | 1 13/16 | 21/32 | 7.40 |
| 5B42SD | SD | 1/2 – 2 | E-Sol. | 4.20 | 3.80 | 4.55 | 2 27/32 | 1 13/16 | 21/32 | 8.00 |
| 5B44SD | SD | 1/2 – 2 | E-Sol. | 4.40 | 4.00 | 4.75 | 2 27/32 | 1 13/16 | 21/32 | 8.50 |
| 5B46SD | SD | 1/2 – 2 | A-Sol. | 4.60 | 4.20 | 4.95 | 21/32 | 1 13/16 | 1 17/32 | 9.00 |
| 5B48SD | SD | 1/2 – 2 | A-Sol. | 4.80 | 4.40 | 5.15 | 21/32 | 1 13/16 | 1 17/32 | 9.40 |
| 5B50SD | SD | 1/2 – 2 | A-Sol. | 5.00 | 4.60 | 5.35 | 21/32 | 1 13/16 | 1 17/32 | 10.00 |
| 5B52SD | SD | 1/2 – 2 | A-Sol. | 5.20 | 4.80 | 5.55 | 21/32 | 1 13/16 | 1 17/32 | 10.40 |
| 5B54SK | SK | 1/2 – 2 5/8 | A-Sol. | 5.40 | 5.00 | 5.75 | 17/32 | 1 15/16 | 1 17/32 | 10.80 |
| 5B56SK | SK | 1/2 – 2 5/8 | A-Sol. | 5.60 | 5.20 | 5.95 | 17/32 | 1 15/16 | 1 17/32 | 11.30 |
| 5B58SK | SK | 1/2 – 2 5/8 | A-Sol. | 5.80 | 5.40 | 6.15 | 17/32 | 1 15/16 | 1 17/32 | 12.00 |
| 5B60SK | SK | 1/2 – 2 5/8 | A-Sol. | 6.00 | 5.60 | 6.35 | 17/32 | 1 15/16 | 1 17/32 | 14.00 |
| 5B62SK | SK | 1/2 – 2 5/8 | A-Sol. | 6.20 | 5.80 | 6.55 | 17/32 | 1 15/16 | 1 17/32 | 15.00 |
| 5B64SK | SK | 1/2 – 2 5/8 | A-Sol. | 6.40 | 6.00 | 6.75 | 17/32 | 1 15/16 | 1 17/32 | 16.00 |
| 5B66SK | SK | 1/2 – 2 5/8 | A-Sol. | 6.60 | 6.20 | 6.95 | 17/32 | 1 15/16 | 1 17/32 | 17.00 |
| 5B68SK | SK | 1/2 – 2 5/8 | A-Sol. | 6.80 | 6.40 | 7.15 | 17/32 | 1 15/16 | 1 17/32 | 18.00 |
| 5B70SF | SF | 1/2 – 2 15/16 | A-Sol. | 7.00 | 6.60 | 7.35 | 15/32 | 2 1/16 | 1 15/32 | 19.00 |
| 5B74SF | SF | 1/2 – 2 15/16 | A-Web. | 7.40 | 7.00 | 7.75 | 15/32 | 2 1/16 | 1 15/32 | 20.00 |
| 5B80SF | SF | 1/2 – 2 15/16 | A-Web. | 8.00 | 7.60 | 8.35 | 15/32 | 2 1/16 | 1 15/32 | 21.00 |
| 5B86SF | SF | 1/2 – 2 15/16 | A-Web. | 8.60 | 8.20 | 8.95 | 15/32 | 2 1/16 | 1 15/32 | 22.00 |
| 5B94SF | SF | 1/2 – 2 15/16 | A-Arm | 9.40 | 9.00 | 9.75 | 15/32 | 2 1/16 | 1 15/32 | 24.00 |
| 5B110SF | SF | 1/2 – 2 15/16 | A-Arm | 11.00 | 10.60 | 11.35 | 15/32 | 2 1/16 | 1 15/32 | 29.00 |
| 5B124SF | SF | 1/2 – 2 15/16 | A-Arm | 12.40 | 12.00 | 12.75 | 15/32 | 2 1/16 | 1 15/32 | 34.00 |
| 5B136SF | SF | 1/2 – 2 15/16 | A-Arm | 13.60 | 13.20 | 13.95 | 15/32 | 2 1/16 | 1 15/32 | 38.00 |
| 5B154SF | SF | 1/2 – 2 15/16 | A-Arm | 15.40 | 15.00 | 15.75 | 15/32 | 2 1/16 | 1 15/32 | 46.00 |
| 5B160SF | SF | 1/2 – 2 15/16 | A-Arm | 16.00 | 15.60 | 16.35 | 15/32 | 2 1/16 | 1 15/32 | 49.00 |
| 5B184SF | SF | 1/2 – 2 15/16 | A-Arm | 18.40 | 18.00 | 18.75 | 15/32 | 2 1/16 | 1 15/32 | 55.00 |
| 5B200SE | E | 7/8 – 3 1/2 | A-Arm | 20.00 | 19.60 | 20.35 | 3/32 | 2 3/4 | 1 5/32 | 65.00 |
| 5B250SE | E | 7/8 – 3 1/2 | A-Arm | 25.00 | 24.60 | 25.35 | 3/32 | 2 3/4 | 1 5/32 | 86.00 |
| 5B300SE | E | 7/8 – 3 1/2 | A-Arm | 30.00 | 29.60 | 30.35 | 3/32 | 2 3/4 | 1 5/32 | 102.00 |
| 5B380SE | E | 7/8 – 3 1/2 | A-Arm | 38.00 | 37.60 | 38.35 | 3/32 | 2 3/4 | 1 5/32 | 132.00 |
| 6 GROOVES, F = 4 3/4″ | ||||||||||
| Part No. | Bush | Bore Range | Type | D.D. | O.D. | E | L | M | Wt.Less Bush. | |
| “B” Belts | “A”Belts | |||||||||
| 6B34SD | SD | 1/2″ – 2″ | E-Sol. | 3.4″ | 3.0″ | 3.75″ | 3 31/32″ | 1 13/16″ | 1 1/32″ | 6.70 |
| 6B36SD | SD | 1/2 – 2 | E-Sol. | 3.60 | 3.20 | 3.95 | 3 31/32 | 1 13/16 | 1 1/32 | 7.40 |
| 6B38SD | SD | 1/2 – 2 | E-Sol. | 3.80 | 3.40 | 4.15 | 3 31/32 | 1 13/16 | 1 1/32 | 8.00 |
| 6B40SD | SD | 1/2 – 2 | E-Sol. | 4.00 | 3.60 | 4.35 | 3 19/32 | 1 13/16 | 21/32 | 8.40 |
| 6B42SD | SD | 1/2 – 2 | E-Sol. | 4.20 | 3.80 | 4.55 | 3 19/32 | 1 13/16 | 21/32 | 9.00 |
| 6B44SD | SD | 1/2 – 2 | E-Sol. | 4.40 | 4.00 | 4.75 | 3 19/32 | 1 13/16 | 21/32 | 9.70 |
| 6B46SD | SD | 1/2 – 2 | A-Sol. | 4.60 | 4.20 | 4.95 | 21/32 | 1 13/16 | 2 9/32 | 10.10 |
| 6B48SD | SD | 1/2 – 2 | A-Sol. | 4.80 | 4.40 | 5.15 | 21/32 | 1 13/16 | 2 9/32 | 10.60 |
| 6B50SD | SD | 1/2 – 2 | A-Sol. | 5.00 | 4.60 | 5.35 | 21/32 | 1 13/16 | 2 9/32 | 11.00 |
| 6B52SD | SD | 1/2 – 2 | A-Sol. | 5.20 | 4.80 | 5.55 | 21/32 | 1 13/16 | 2 9/32 | 12.00 |
| 6B54SK | SK | 1/2 – 2 5/8 | A-Sol. | 5.40 | 5.00 | 5.75 | 17/32 | 1 15/16 | 2 9/32 | 13.00 |
| 6B56SK | SK | 1/2 – 2 5/8 | A-Sol. | 5.60 | 5.20 | 5.95 | 17/32 | 1 15/16 | 2 9/32 | 14.00 |
| 6B58SK | SK | 1/2 – 2 5/8 | A-Sol. | 5.80 | 5.40 | 6.15 | 17/32 | 1 15/16 | 2 9/32 | 14.60 |
| 6B60SK | SK | 1/2 – 2 5/8 | A-Sol. | 6.00 | 5.60 | 6.35 | 17/32 | 1 15/16 | 2 9/32 | 15.00 |
| 6B62SK | SK | 1/2 – 2 5/8 | A-Sol. | 6.20 | 5.80 | 6.55 | 17/32 | 1 15/16 | 2 9/32 | 16.00 |
| 6B64SK | SK | 1/2 – 2 5/8 | A-Sol. | 6.40 | 6.00 | 6.75 | 17/32 | 1 15/16 | 2 9/32 | 17.00 |
| 6B66SK | SK | 1/2 – 2 5/8 | A-Sol. | 6.60 | 6.20 | 6.95 | 17/32 | 1 15/16 | 2 9/32 | 18.00 |
| 6B68SK | SK | 1/2 – 2 5/8 | A-Sol. | 6.80 | 6.40 | 7.15 | 17/32 | 1 15/16 | 2 9/32 | 19.00 |
| 6B70SF | SF | 1/2 – 2 15/16 | A-Sol. | 7.00 | 6.60 | 7.35 | 27/32 | 2 1/16 | 1 27/32 | 20.00 |
| 6B74SF | SF | 1/2 – 2 15/16 | A-Sol. | 7.40 | 7.40 | 7.75 | 27/32 | 2 1/16 | 1 27/32 | 22.00 |
| 6B80SF | SF | 1/2 – 2 15/16 | A-Web | 8.00 | 7.60 | 8.35 | 27/32 | 2 1/16 | 1 27/32 | 24.00 |
| 6B86SF | SF | 1/2 – 2 15/16 | A-Web | 8.60 | 8.20 | 8.95 | 27/32 | 2 1/16 | 1 27/32 | 26.00 |
| 6B94SF | SF | 1/2 – 2 15/16 | A-Arm | 9.40 | 9.00 | 9.75 | 27/32 | 2 1/16 | 1 27/32 | 27.00 |
| 6B110SF | SF | 1/2 – 2 15/16 | A-Arm | 11.00 | 10.60 | 11.35 | 27/32 | 2 1/16 | 1 27/32 | 32.00 |
| 6B124SF | SF | 1/2 – 2 15/16 | A-Arm | 12.40 | 12.00 | 12.75 | 27/32 | 2 1/16 | 1 27/32 | 39.00 |
| 6B136SF | SF | 1/2 – 2 15/16 | A-Arm | 13.60 | 13.20 | 13.95 | 27/32 | 2 1/16 | 1 27/32 | 44.00 |
| 6B154SF | SF | 1/2 – 2 15/16 | A-Arm | 15.40 | 15.00 | 15.75 | 27/32 | 2 1/16 | 1 27/32 | 50.00 |
| 6B160SF | SF | 1/2 – 2 15/16 | A-Arm | 16.00 | 15.60 | 16.35 | 27/32 | 2 1/16 | 1 27/32 | 54.00 |
| 6B184SF | SF | 1/2 – 2 15/16 | A-Arm | 18.40 | 18.00 | 18.75 | 27/32 | 2 1/16 | 1 27/32 | 62.00 |
| 6B200E | E | 7/8 – 3 1/2 | A-Arm | 20.00 | 19.60 | 20.35 | 7/32 | 2 3/4 | 1 25/32 | 74.00 |
| 6B250E | E | 7/8 – 3 1/2 | A-Arm | 25.00 | 24.60 | 25.35 | 7/32 | 2 3/4 | 1 25/32 | 96.00 |
| 6B300E | E | 7/8 – 3 1/2 | A-Arm | 30.00 | 29.60 | 30.35 | 7/32 | 2 3/4 | 1 25/32 | 119.00 |
| 6B380E | E | 7/8 – 3 1/2 | A-Arm | 38.00 | 37.60 | 38.35 | 7/32 | 2 3/4 | 1 25/32 | 134.00 |
| 8 GROOVES, F = 6 1/4″ | ||||||||||
| Part No. | Bush | Bore Range | Type | D.D. | O.D. | E | L | M | Wt.Less Bush. | |
| “B” Belts | “A”Belts | |||||||||
| 8B54SK | SK | 1/2 – 2 5/8 | A-Sol. | 5.40 | 5.00 | 5.75 | 1 1/32 | 1 15/16 | 3 9/32 | 15.00 |
| 8B56SK | SK | 1/2 – 2 5/8 | A-Sol. | 5.60 | 5.20 | 5.95 | 1 1/32 | 1 15/16 | 3 9/32 | 16.00 |
| 8B60SF | SF | 1/2 – 2 15/16 | A-Sol. | 6.00 | 5.60 | 6.35 | 31/32 | 2 1/16 | 3 7/32 | 20.00 |
| 8B64SF | SF | 1/2 – 2 15/16 | A-Sol. | 6.40 | 6.00 | 6.75 | 31/32 | 2 1/16 | 3 7/32 | 23.00 |
| 8B68SF | SF | 1/2 – 2 15/16 | A-Sol. | 6.80 | 6.40 | 7.15 | 31/32 | 2 1/16 | 3 7/32 | 25.00 |
| 8B74SF | SF | 1/2 – 2 15/16 | A-Sol. | 7.40 | 7.00 | 7.75 | 31/32 | 2 1/16 | 3 7/32 | 28.00 |
| 8B86E | E | 7/8 – 3 1/2 | A-Sol. | 8.60 | 8.20 | 8.95 | 1 7/32 | 2 3/4 | 2 9/32 | 40.00 |
| 8B94E | E | 7/8 – 3 1/2 | A-Web | 9.40 | 9.00 | 9.75 | 1 7/32 | 2 3/4 | 2 9/32 | 43.00 |
| 8B110E | E | 7/8 – 3 1/2 | A-Arm | 11.00 | 10.60 | 11.35 | 1 7/32 | 2 3/4 | 2 9/32 | 49.00 |
| 8B124E | E | 7/8 – 3 1/2 | A-Arm | 12.40 | 12.00 | 12.75 | 1 7/32 | 2 3/4 | 2 9/32 | 56.00 |
| 8B154E | E | 7/8 – 3 1/2 | A-Arm | 15.40 | 15.00 | 15.75 | 1 7/32 | 2 3/4 | 2 9/32 | 69.00 |
| 8B184F | F | 1 – 4 | D-Arm | 18.40 | 18.00 | 18.75 | 1/32 | 3 3/4 | 2 17/32 | 91.00 |
| 8B200F | F | 1 – 4 | D-Arm | 20.00 | 19.60 | 20.35 | 1/32 | 3 3/4 | 2 17/32 | 98.00 |
| 8B250F | F | 1 – 4 | D-Arm | 25.00 | 24.60 | 25.35 | 1/32 | 3 3/4 | 2 17/32 | 121.00 |
| 8B300F | F | 1 – 4 | D-Arm | 30.00 | 29.60 | 30.35 | 1/32 | 3 3/4 | 2 17/32 | 148.00 |
| 8B380F | F | 1 – 4 | D-Arm | 38.00 | 37.60 | 38.35 | 1/32 | 3 3/4 | 2 17/32 | 194.00 |
| 10 GROOVES, F = 7 3/4″ | ||||||||||
| Part No. | Bush | Bore Range | Type | D.D. | O.D. | E | L | M | Wt.Less Bush. | |
| “B” Belts | “A”Belts | |||||||||
| 10B54SK | SK | 1/2 – 2 5/8 | A-Sol. | 5.40 | 5.00 | 5.75 | 1 25/32 | 1 15/16 | 4 1/32 | 18.00 |
| 10B56SK | SK | 1/2 – 2 5/8 | A-Sol. | 5.60 | 5.20 | 5.95 | 1 25/32 | 1 15/16 | 4 1/32 | 20.00 |
| 10B60SF | SF | 1/2 – 2 15/16 | A-Sol. | 6.00 | 5.60 | 6.35 | 1 23/32 | 2 1/16 | 3 31/32 | 24.00 |
| 10B64SF | SF | 1/2 – 2 15/16 | A-Sol. | 6.40 | 6.00 | 6.75 | 1 23/32 | 2 1/16 | 3 31/32 | 26.00 |
| 10B68SF | SF | 1/2 – 2 15/16 | A-Sol. | 6.80 | 6.40 | 7.15 | 1 23/32 | 2 1/16 | 3 31/32 | 28.00 |
| 10B74SF | SF | 1/2 – 2 15/16 | A-Sol. | 7.40 | 7.00 | 7.75 | 1 23/32 | 2 1/16 | 3 31/32 | 32.00 |
| 10B86E | E | 7/8 – 3 1/2 | A-Sol. | 8.60 | 8.20 | 8.95 | 1 31/32 | 2 3/4 | 3 1/32 | 42.00 |
| 10B94E | E | 7/8 – 3 1/2 | A-Web | 9.40 | 9.00 | 9.75 | 1 31/32 | 2 3/4 | 3 1/32 | 48.00 |
| 10B110E | E | 7/8 – 3 1/2 | A-Arm | 11.00 | 10.60 | 11.35 | 1 31/32 | 2 3/4 | 3 1/32 | 56.00 |
| 10B124E | E | 7/8 – 3 1/2 | A-Arm | 12.40 | 12.00 | 12.75 | 1 31/32 | 2 3/4 | 3 1/32 | 64.00 |
| 10B154F | F | 1 – 4 | A-Arm | 15.40 | 15.00 | 15.75 | 5/8 | 3 3/4 | 3 9/32 | 88.00 |
| 10B184F | F | 1 – 4 | A-Arm | 18.40 | 18.00 | 18.75 | 5/8 | 3 3/4 | 3 9/32 | 103.00 |
| 10B200F | F | 1 – 4 | A-Arm | 20.00 | 19.60 | 20.35 | 5/8 | 3 3/4 | 3 9/32 | 112.00 |
| 10B250F | F | 1 – 4 | A-Arm | 25.00 | 24.60 | 25.35 | 5/8 | 3 3/4 | 3 9/32 | 142.00 |
| 10B300F | F | 1 – 4 | A-Arm | 30.00 | 29.60 | 30.35 | 5/8 | 3 3/4 | 3 9/32 | 174.00 |
| 10B380J | J | 1 1/2 – 4 1/2 | A-Arm | 38.00 | 37.60 | 38.35 | 1/8 | 4 5/8 | 3 | 230.00 |