MD64LB (CF64, 4.5"OD) Large Bore MagiDrive™ Rotary Feedthrough
Features
- Hollow drive
- 48.5 mm clear bore
- High torque
- No bellows or dynamic seals
- Bakeable to 250°C
- Zero-backlash under low load
The MD64LB is a larger version of the MD35LB drive and has a larger clear bore of 48.5mm. Whereas the standard MD64H has a fixed CF35 rear flange, the MD64LB has a CF64 rear flange to accommodate the larger through bore and the flange is also rotatable. As such this manipulator is ideal for applications requiring larger diameter multiple services to be passed through the drive, to facilitate for example, addition motions, electrical connections for sample heating or measurement, pipes for cooling etc. The rotatable rear flange provides for greater flexibility when mounting additional devices to the rear of the drive in spatially constrained situations, as that device can be mounted in any angular orientation. The drives can be stacked to provide multiple co-axial driven shafts through a single CF64 port, and given that both the mounting and rear flanges are the same size, the drives can be stacked one atop another infinitely in principal (limited only by the shaft diameters). THE MD64LBM supplies higher torque with the same dimensions.
The usual range of drive options is available from manual actuation, through various pneumatic and motor driven configurations. In these configurations limit and home switches can also be provided including an ingenious 'over 360°' option, to get slightly more than one full rotation.
Specifications Table
| MagiDrive Body | MD64LB | MD64LBM |
| System Mounting Flange | CF64, 114 mm (4.5" O.D.) | |
| Rear Flange (Fixed) | CF64, 114 mm (4.5" O.D.) | |
| Construction | Machined from one piece 316L | |
| Clear Bore | 48.5mm | |
| Shaft Style | Tube with Spigot Flange | |
| Breakaway-Away Torque | 8 Nm (5.90 lbf ft) | 40 Nm (29.50 lbf ft) |
| Maximum No-Load Spin Speed (Standard Bearings) | 245 rpm | |
| Maximum Shaft Axial Thrust | 415 N (93 lbf) | |
| Bakeout | 250°C | |
Dimensional Drawings
Charts
Manual Options
| Code | Actuation Method | Description |
| CB | Calibrated thimble w/brake | A calibrated thimble gives visual indication of the drive position with one degree increments. It is fitted with the friction control system as standard. Including the capability to lock the drive in any position. All MD64LB models are supplied with timing pulley, brake and calibrated thimble as standard. |
| P | Timing Pulley | A pulley is mounted on the end of the drive allowing users to install their own motor assemble.All MD64LB models are supplied with timing pulley, brake and calibrated thimble as standard. |
Motorization Options
| Code | Actuation Method | Description |
| SS | Side mounted stepper motor | A stepper motor mounted to the side of the drive. |
| SSS | Side mounted stepper motor w/switches | A side mounted stepper motor with a rear disk & switch assembly to provide a datum home position. |
| SSL | + Limit Switches | A stepper motor mounted to the side of the drive with end of travel switch limiters |
| SSSL | + Home & Limit Switches | A side mounted stepper motor with a rear disk & switch assembly to provide a datum home position and end of travel switch limiters |
| SSE | + Encoder | A stepper motor mounted to the side of the drive with a rotary encoder to provide positional data |
| SSES | + Encoder & Home Sensor | A side mounted stepper motor with a rear disk & switch assembly to provide a datum home position and a rotary encoder to provide positional data |
| SSEL | + Encoder & Limit Switches | A stepper motor mounted to the side of the drive with a rotary encoder to provide positional and end of travel switch limiters |
| SSESL | + Encoder, Home & Limit Switches | A side mounted stepper motor with a rear disk & switch assembly to provide a datum home position, rotary encoder to provide positional data, and end of travel switch limiters |
| SD | Side mounted DC motor | A DC motor mounted to the side of the drive. |
| SM | Side-mounted SMART Motor Only | A side mounted Smart DC motor |
| SMS | + Home Sensor | A side mounted Smart DC motor with a rear disk & switch assembly to provide a datum home position |
| SML | + Limit Switches | A side mounted Smart DC motor with end of travel switch limiters |
| SMSL | + Home & Limit Switches | A side mounted Smart DC motor with a rear disk & switch assembly to provide a datum home position and end of travel switch limiters |
Pneumatic Options
| Code | Actuation Method | Description |
| RA | Side mounted pneumatic actuator | Pneumatically actuated MagiDrives are fitted with an adjustable rotary actuator providing from 30-170° sweep. Flow controllers enable input and exhaust to be throttled to control speed. |
| RAI | Side mounted pneumatic actuator w/ 2X reed switches & visual position indicators | As above but fitted with two reed switches to provide position feedback for system interlock facilities. This option also includes LED's allowing the user to see the position of the shutter in open or closed states. |
Gear Option Table
Each motorized MagiDrive is offered with a range of gearbox options allowing a variety of torque and spin speed solutions to be offered as standard. Special configurations are available on request.
| Drive | Motor Type | Gear Option | Maximum Output Torque (Nm) |
Maximum Output Spin Speed (RPM) |
| MD64LBCB (MD64LBMCB)* |
Side Mounted DC (SD) | 1 | 1.7 | 245 |
| 2 | 4.3 | 98 | ||
| 3 | 7.9 | 49 | ||
| 4 | 10 | 25 | ||
| Side Mounted Stepper (SS) | 1 | 3.7 | 150 | |
| 2 | 7.3 | 75 | ||
| 3 | 8 *(16.8) |
30 | ||
| 4 | 8 *(33.6) |
15 |
Shaft & Bearing Options Table
| Drive | Shaft Options | Bearing Options |
| MD64LB MD64LBM |
X000 - Standard Tube (L tbc) | Z - Standard Bearing CE - Ceramic Bearing |