102/182 Direct Drive Propeller Meters

MainLine Meter Direct Drive Quality

We took the wear out of our Model 102/182 Mainline Propeller Meters with full radius tungsten carbide tips on the propeller and vertical shafts and tungsten carbide disks on the thrust screws to take the thrust loading to extend bearing life.

• Our stainless steel worm gears are precision ground and heat treated to Rockwell C-60.

• Our propellers have the same specific gravity as water and virtually "float", eliminating any side loading of the bearings and resultant wear.

• A hex insert molded in place, incorporates machined groves to prevent movement and a Woodruff key ensures a positive, wear resistant drive.

The Sparling Worm Gear (left) is precision ground from 316SS and hardened to Rockwell C-60. Don't accept meters with cheap worm gears (right) machined from 300 series unhardened stainless, with lathe-cut threads.

Sparling's molded polyethylene propellers (left) are calibrated to your exact requirements. They have the same specific gravity as water so they virtually "float," eliminating any side loading of the bearings and resultant wear. A hex insert, molded in place, incorporates machined grooves to prevent movement. A Woodruff key ensures a positive, wear-resistant drive.

Don't use propellers containing an insert secured with a setscrew (right). They're at least 18% heavier than Sparling's. That extra weight will create side loads on the bearings, causing them to wear out quickly. Also, check the propeller drive for excessive play. Anything but a woodruff key drive can mean replacement after only a few short months.

Sparling's vertical shaft (left) has a full-radius tungsten-carbide tip that interfaces with an opposing carbide disc in the thrust screw, i.e. carbide against carbide for maximum wear resistance and years of trouble-free operation. Also, the shaft includes a broached keyway with Woodruff key, ensuring a positive close-tolerance drive with virtually no friction and wear.

Vertical shafts with a machined flat tip often feature a cheap ceramic disc for a thrust interface. They produce friction, wear, and quick product burnout. Instead of a Woodruff key, some use a sloppy pin drive which can wear to the point where the shaft will spin free and lose registration. Instead of Sparling quality you'll get faulty performance and face product wearout.

For more detailed information, request literature or contact your local Sparling Representative.