Tolomatic Float-A-Shaft® Gearboxes
R.M. Hoffman has the world's LARGEST stock of Float-A-Shafts. We stock quantities of all sizes.
Tolomatic's Float-A-Shaft "floats" on rotating shafts. No other design has the versatility, durability, safety, or the ease of operation as Float-A-Shaft.
Float-A-Shaft is a universal right angle gear drive coupling. It consists of two 45° helical gears that mesh at right angles, designed to turn power around any corner. Float-A-Shaft can be operated in either direction and can slide axially along the drive or driven shaft. A lightweight aluminum housing encloses the gears, serving as a structural support and a lubricant reservoir. The gears mount directly on the shafts through key ways in the gears and shafts. These rugged and durable hardened helical gears have been field-proven for over 50 years, assuring dependable operation. Float-A-Shaft's unique floating design maintains perfect alignment. It also eliminates dangerous chain sprocket drives and the additional adjustments required for chain drive applications.
Float-A-Shafts are available in either a low torque journal bearing series or a high torque sealed roller bearing series.
Design Features
- Available for both English and metric shafts
- Torque ratings up to 1100 lb-in
- Speeds up to 500 RPM
- Maximum operating temperature of 300° F
- Standard model ratios of 1:1, 1.5:1, 2:1, 2.5:1; compact model available with 1:1 ratio
- Multiple shaft bore size combinations:
- Bores are ground to within 0.001” tolerance
- Able to operate in either direction and slide axially along shaft keyway
- Helical gears are case hardened steel
- Die cast aluminum gear case forms a lubricant reservoir
- Low torque journal bearings:
- Porous bronze flange bearings for superior lubrication, readily absorbs foreign particles for long shaft life
- Requires no servicing under adverse dust and moisture conditions
- High torque roller bearings:
- Mechanically retained, sealed roller bearings with hardened and ground steel bearing races keyed to shaft
- Hardened steel thrust bearings and thrust races
- Can be installed onto shafts in less than a minute
- Options:
- Flat base/foot mount or standard mount
| English (inches) | Metric (mm) | |||
| Bore 1 | Bore 2 | Bore 1 | Bore 2 | |
| Compact 1:1 | 1/2, 5/8 | 1/2, 5/8 | 12, 15 | 12, 15 |
| Standard 1:1 | 3/4, 1, 1-1/4, 1-1/2 | 3/4, 1, 1-1/4, 1-1/2 | 20, 25, 30 | 20, 25, 30 |
| Standard 1.5:1 | 3/4, 1, 1-1/4 | 3/4, 1, 1-1/4 | 25, 30 | 25, 30 |
| Standard 2:1 | 1/2, 5/8, 3/4 | 3/4, 1, 1-1/4 | 15 | 20, 25, 30 |
| Standard 2.5:1 | 1/2, 5/8 | 3/4, 1, 1-1/4 | ||
Have a simple question? Check out the Tolomatic Power Transmission FAQs, or the Float-A-Shaft Lubrication Schedule & Shaft and Keyway Requirements downloads.
Have a more complicated question? Need a quote or would like to make an order?
Contact us anytime!