| 1 | = BarrettHand BH8-280 Technical Specifications = |
| 2 | |
| 3 | === Kinematics === |
| 4 | Total fingers: 3 |
| 5 | Fingers which spread: 2 |
| 6 | Joints per finger: 2 |
| 7 | Motors per finger: 1 |
| 8 | Axes of palm spread motion: 2 |
| 9 | Motors for palm spread motion: 1 |
| 10 | Total hand axes: 8 |
| 11 | Total hand motors: 4 |
| 12 | |
| 13 | === Range of Motion === |
| 14 | Finger base joint: 140° |
| 15 | Fingertip: 45° |
| 16 | Finger spread: 180° |
| 17 | |
| 18 | === Finger Speed === |
| 19 | Finger fully open to fully closed:1.0 sec |
| 20 | Full 180° finger spread: 0.5 sec |
| 21 | |
| 22 | === Position Sensing === |
| 23 | Type: optical incremental encoder |
| 24 | Resolution: 0.008° at the finger base joint |
| 25 | 17,500 encoder counts full finger open to full close |
| 26 | |
| 27 | === Weight === |
| 28 | BH8-280 : 1.2 kg (2.60 lb) |
| 29 | |
| 30 | BH8-282 : 978 g (2.15 lb) |
| 31 | |
| 32 | Optional Arm Adapter B0133: 0.2 kg |
| 33 | (0.4 lb) additional |
| 34 | |
| 35 | === Payload === |
| 36 | 6.0 kg (13.2 lbs), 2.0 kg (4.4 lb) per finger |
| 37 | |
| 38 | === Finger Forces (at tip) === |
| 39 | Active: 15 N (3.3 lb) |
| 40 | Passive: 20 N (4.4 lb) |
| 41 | |
| 42 | === Motor Type === |
| 43 | Rare-Earth , brushless, DC, servo motors |
| 44 | |
| 45 | === Mechanisms === |
| 46 | Worm drives integrated with patented cable drive and breakaway clutch |
| 47 | |
| 48 | === Cycles per Month === |
| 49 | 10,000 |
| 50 | |
| 51 | === Power Requirements === |
| 52 | AC electrical outlet |
| 53 | |
| 54 | Load: 440 W |
| 55 | |
| 56 | Phases: Single |
| 57 | |
| 58 | Voltage: 120/240 VAC (85-264 Vrms) |
| 59 | |
| 60 | Frequency: 50/60 Hz (47-63 Hz) |
| 61 | |
| 62 | === Power Supply === |
| 63 | Location: dry, stationary surface |
| 64 | Size H,W,D: 295 x 145 x 40 mm |
| 65 | (11.8 x 5.7 x 1.7 in) |
| 66 | Weight (BH8-280): 1.3 kg (3.4 lb) |
| 67 | Single Cable to Hand |
| 68 | 3m continuous-flex cable, 8mm diameter |
| 69 | |
| 70 | === Hand Dimensions === |
| 71 | |
| 72 | [[Image(htdocs:bhand/280/figure40.png)]] |
| 73 | |
| 74 | Figure 40 - !BarrettHand™ Dimensions |
| 75 | |
| 76 | === Available Options === |
| 77 | * B029A Strain gage Fingertip Torque Sensors for all three fingers |
| 78 | * B0111 C++ Function Library |
| 79 | * B01C3 Subscription Service |
| 80 | |
| 81 | === US Patents (patents established and pending in other countries) === |
| 82 | * 5,501,498 |
| 83 | * 5,388,480 |
| 84 | * 4,957,320 |