As an evolutionary step from our split-formed drive pulleys, NHI has created two lines of split-formed idler pulleys, based on the type of bearing used.  One line is manufactured with bearings that have rolling elements - primarily using our "H" Series ABEC-1 ball bearings while the second uses "plane" bearings (bushings).

The split-forming process for drive and idler pulleys gives you the advantages of the one-piece pulley design.  Inherently balanced, the split-formed pulley groove is made in one operation to give a true groove form and provide the resistance to deformation in the application not found in two piece designs.  From a visual standpoint, the split-formed idler is the perfect compliment to our split-formed drives.  This unified appearance is sure to please your customers.

Split-formed idlers can be manufactured from any of New Hampshire Industries many tooled drive pulleys.  While true on all sizes, it is particularly important to remember that your choice of bearings will be limited on the smaller pulley sizes by the physical room available to mount the bearing.

Rolling Element Bearing Idlers - While the NHI "H-Series" of ball bearings (and the 6203 bearing in particular) are the bearings primarily employed to date in this line, your bearing choices are limited only by the availability of bearings. 

Mounting the bearings is done in one of two manners:

• Welded in bearing pocket
• Integral bearing pocket.

The advantages and disadvantages of each design for bearing mounting are listed in the table below:

Bushed Idlers - As with the rolling element bearing idlers, the only limitation in bearing choice is what the bearing industry has available that physically fits within the part.  New Hampshire Industries currently manufactures products with bronze bushings and with PTFE lined steel bushings. 

Available, also like the split-formed idlers with bearings, are both the welded in pocket (or hub) and the integral pocket designs for mounting the bushing.  The welded in place hub has been proven to be the most popular method for making this product line. 

What can we build for you?

NHI can build what you need.  We do have fair number of standard components already designed that we can use to assemble the parts you need or we can build to your design.  NHI "H-Series" bearings give you the opportunity to use the variety of bore adapters that NHI has available to fit these industry standard bearings.  Need a bushed design? Contact NHI Product Engineering (support@nhipulleys.com) to learn about the bronze and PTFE lined steel bushing that we already have as active part numbers.

Want to discuss the possibilities? Call a NHI Product Engineer at (877) 438-1438 or a sales representative today (need help finding your representative?) today.