The TTWN-12 is a closed-type twin pillow block bearing for end-supported applications, designed to provide low-friction rotary support with lubrication access. It has a 0.750-inch nominal bore diameter, measures 2.75 inches in length, 1.88 inches in width, and 4.50 inches in overall length. The block weighs 1.75 pounds and is rated for a dynamic load capacity of 1200 lbf. It uses a #8 bolt hole for mounting and features a lubrication access fitting for sizes up to 0.625 inch; the TTWN-12 includes a 1/4-28 lubrication port. The product is marked as a standard item with corrosion-resistant or nylon ball options available as additions to the catalog number.
A bearing is a device that reduces friction between moving components by preventing metal-to-metal contact while assisting components (shafts, axles, and wheels) to freely rotate around a fixed axis, cutting down on heat generation and the amount of energy that is consumed. By replacing sliding motion with low-friction rolling motion, the life of the rotating components is increased. A bearing also keeps the shaft in the proper position, providing support and alignment and transferring the axial or radial loads to the housing.
The types of bearings that we offer include rolling element bearings, which consist of both ball bearings and roller bearings.
Balls are utilized as the rolling element in ball bearings; a retainer holds the balls in place and allows them to freely rotate. The balls are kept inside channels cut in both the inner and outer races. Because there is no surface contact between the balls and races, precision ball bearings have a lower load capacity for their size than other bearings.
| Stock Drive Products & Sterling Instrument - SDP/SI | |
|---|---|
| Product Category | Pillow Block Bearings |
| Product Number | TTWN-12 |
| Product Name | Thomson Twin Closed Type Super Ball Bushing Pillow Block TWN12 |
| Bearing Type | Ball |
| Shaft Diameter | 0.7500 inch (19.05 mm) |
| Load Rating | 1200 lbs (544 kg) |
