With 4.5" (CF63) Flanges
The McAllister Technical Services' (MTS) Bellows Sealed Linear Translator (BLT) is the finest of its kind available anywhere. We recognize and appreciate the confidence our customers have placed in our company and we work hard to earn it.
All BLT45 translators have ball bearings on the jacking screws. Even on motorized versions, manual actuation via the provided ratchet wrench is available. The screws and bearings are lubricated with high temperature grease for low friction and long life. All parts are field replaceable. The traveling flange is supported by three jacking screws (see drawing). All translators are also available with long strokes, motor drives, linear encoders, tapped flanges and special heights.
Maintenance:
The BLT45 needs only minimal maintenance. The jacking screw and bearings do, however, need periodic re-lubrication as this coating will degrade over time, due to moisture in the atmosphere. After each bakeout, lightly relubricate the screws with the (provided) high temperature grease. Be especially careful to not use a hydrocarbon grease such as Felpro C100TM unless you periodically clean the oxidized residue from all load-bearing surfaces. The normal bakeout temperature is 150°C but higher temperatures can be used, if needed. For bakeouts between 150°C and 210°C, increase the frequency and thoroughness of lubrication.
Occasionally, the flanges may need to be re-aligned to parallel after removing or replacing the chain.
To adjust the alignment of the two flanges:
- First remove the retainer clip and master link from the chain.
- Remove the chain from the sprockets.
- Using dial calipers or some other measuring instrument, measure the distance between the vacuum faces of the two flanges at three places around the circumference.
- Adjust the three screws individually so that the flanges are parallel to within 0.005" (0.12 mm).
- Replace the chain and master link.
- Refer to the User's manual for more details.
- Do science.
