YUASA 550 Series SUPER ACCU-DEX Rotary Indexes
6-1/2" & 8"
NOW with 4-screw T.I.R. adjustment!
The Super Accu-Dex combines the advantages of the Accu-Dex with those of the worm-geared rotary index. Disengaging the worm drive permits accurate quick indexing by the index pin locator into any of the 24-notch positions on the master gear. Rapid positioning to specific index locations is possible when any masking plate (2, 3, 4, 6, 8 & 12) position is used.
Features:
- Worm can be completely disengaged for free rotation
- For milling, drilling, jig boring, and many common shop applications
- 24 position hardened and ground index plate (15° increments) with satin chrome dial, 360° graduated ring and adjustable 10 second vernier
- Each unit is equipped with six masking plates (2, 3, 4, 6, 8 and 12 divisions)
- The three-jaw Accu-Chuck is completely adjustable to within 0.0005" T.I.R. (0.012)
| SPECIFICATIONS | MAXIMUM VARIATION |
| inches / (mm) | |
| Maximum individual spacing error | 25 seconds |
| Vernier reading | 10 seconds |
| Base to chuck squareness (90 deg) | 0.0008" (0.02mm) |
| Base parallelism | 0.0004" (0.01mm) |
| Mounting flange concentricity | 0.0008" (0.02mm) |
| Chuck concentricity | 0.0005" (0.012mm) |
| DIMENSIONS | |
| Chuck center hole diameter 550-666 | 1.73" (44mm) |
| Chuck center hole diameter 550-008 | 2.48" (63mm) |
| MODELS AND ACCESSORIES | ||
| Model | Description | Weight |
| 550-008 | Index with 8" Accu-Chuck | 166 lbs. (75 kg) |
| 550-111 | Dividing plates | 9 lbs. (4.1 kg) |
| 553-301 | Adjustable tailstock | 35 lbs. (16 kg) |
| 553-302 | 10" Face plate | 24 lbs. (11 kg) |
| 553-303 | 20 position master plate | 3 lbs. (1.4 kg) |
| 553-304 | 5 division masking plate | 1 lb. (0.4 kg) |
| 553-305 | 10 division masking plate | 1 lb. (0.4 kg) |
| 553-330 | 30 position master plate for 550-007 & 550-008 | 3 lbs. (1.4 kg) |
| 553-332 | 32 position master plate for 550-007 & 550-008 | 3 lbs. (1.4 kg) |
| 553-333 | 15 division masking plate 550-007 & 550-008 | 1 lb. (0.4 kg) |
| 553-334 | 16 division masking plate for 550-007 & 550-008 | 1 lb. (0.4 kg) |
| 553-338 | 8" soft master plate blank | 4 lbs. (1.8 kg) |
| 553-339 | 8" soft masking plate blank | 1 lb. (0.4 kg) |
| 550-666 | Index with 6-1/2" Accu-Chuck | 125 lbs. (56.8 kg) |
| 550-111 | Dividing plates | 9 lbs. (4.1 kg) |
| 553-300 | Adjustable tailstock | 24 lbs. (11 kg) |
| 553-222 | 8" Face plate | 18 lbs. (8.2 kg) |
