Simply Manufacturing Inc.
Simply Manufacturing Inc. Simply Manufacturing Inc.

...Simply the best screens, trucks, trees, cages, meat sticks, vats
and stainless steel custom fabrication for your business.



J-Con Idler & Drive Hub Overview

Experiencing unexpected and costly downtime with J-Con? Experiencing continual increased maintenance capital costs with J-Con Idler/Drive Hub Assemblies?

We have learned from existing J-Con customers of a persistent and reoccurring issue that continually has required significant preventative maintenance and consequently resulting in unexpected downtime. This downtime adversely affects multiple departments, including numerous personnel awaiting resolution to the J-Con. Specifically, the Idler/Drive Hub Assemblies have become focal points of the systems overall deficiency due to the sheer quantity within the system, typically around 100-120, creating continuous and never-ending service and maintenance.   In fact, many customers require weekly change out and rebuilt of the hub assemblies to reduce unexpected failures, which often occur regardless of the preventative maintenance.  The seizing of the hub assemblies also resulting in unexpected damage, wear and stretch to the J-Con chain.  The design by the OEM has evolved over the years, by changing the bearing types resulting in the latest design to utilize graphite bushing which still results in costly replacement or rebuilding. 

As result of the many failures, Simply has worked closely with an existing J-Con customer to develop a more robust, longer lasting design with improved design criteria to facilitate Preventative Maintenance.

Alkar Current-Initial Design Issues  

  Ceramic Bearing Failures

  • Replaced with 6205 Roller Bearings
  6205 Roller Bearing Failures
  • Replaced with Bushings Resulting in Bushing Concerns
  Shaft Wear Adjacent to Bearing
  • Resulting in Sprocket and Chain Wear Concerns
 No Grease Egress to Purge to Hub Side Bearing
  • Resulting in Continuous Bearing Failures
 Daily - Weekly Preventative Maintenance Required
  • Check / Rework / Replace
 Failures During Production
  • Costly Downtime and Consumes Maintenance Personnel

The Simply Design Advantage

  Tapered Roller Bearing Design
  • Increased Axial Load Capabilities

  Removable Hub Cover

  • Inspection & Ease of Disassembly

  Integrated Internal Egress Allows Grease Throughout Hub

  • Purged Port in Hub Cover

   Easy Hub and Spindle Disassembly

  • Facilitates Rebuilding
  Easy Bearing Load Adjustment
  • Access by Hub Cover to Shaft Nut 
  Utilize Existing Sprocket
  • Depending on Teeth Wear

  Easily Removable Axial Bearing Cones

  Double Lip Seal and V-Ring Seals same as OEM

  Provided Fully Assembled

  Direct Assembly Replacement to OEM


J-Con Idler Hub Assembly w/ 27-Tooth Sprocket

Includes the following:

  • (1) 27-tooth sprocket
  • (1) idler hub
  • (2) tapered roller bearings
  • (2) bearing cups & cones
  • (1) hub cover
  • ( 1) double lip seal
  • (1) hub cover viton o-ring
  • (1) internal snap ring
  • (1) bearing lock nut
  • (1) bearing lock tab washer
  • (1) bearing thrust washer
  • (1) Belleville washer
  • (1) grease bolt
  • (1) spindle shaft.

Note: Hubs not supplied greased; it is recommended customer applies the applicable grease according to company standards.

We have available the 40-Tooth Idler for the turns in the intermediate zones.




J-Con Drive Hub Assembly w/ 27-Tooth Sprocket

Includes the following:

  • (1) 27-tooth sprocket w/ 6-hole bolt pattern
  • (1) drive hub
  • (2) tapered roller bearings
  • (2) bearing cups & cones
  • (1) hub cover, (1) double lip seal
  • (1) hub cover viton o-ring
  • (1) internal snap ring
  • (1) bearing lock nut
  • (1) bearing lock tab washer
  • (1) bearing thrust washer
  • (1) belleville washer
  • (1) grease bolt
  • (1) spindle shaft. 

Note: Hubs not supplied greased; it is recommended customer applies the applicable grease according to company standards.







Simply currently has over 400 hub assemblies installed in multiple locations with much success.  In fact, we have the initial installation of idler and drive hubs for over 36 months without requiring extensive servicing, only greasing as required.  The design allows for in-place greasing which includes hub access cover which is manually opened until weep hole is exposed, then manually pump grease into the grease zerk on opposite end until grease escapes the weep hole.

Disclaimer: 
Simply Manufacturing, Inc. (‘SMI’) is unrelated to Alkar-RapidPak, Inc. ('Alkar'). SMI products are not produced by, associated with, or endorsed by Alkar.  ALKAR® is a registered trademark, and J-CON™ and RAPIDPAK™ are unregistered trademarks, of Alkar-RapidPak, Inc.”.
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