1.90” Roller Tube OD Inserts

• Injection Molded
• Conductive plastic with 2 ABEC-1 ball bearings
• 43mm OD (Effective diameter) – 1.69”

Standard tube is 1.90” OD x .065” wall thickness

• Other sizes available – call for information
• 43MM insert OD with belt installed is 1.84” final OD

Poly V Belt Configuration

• Accommodates Hutchinson ConveyXonic “J” series - 2, 3, or 4 ribs
• Belts are available from Ralphs-Pugh

Ralphs-Pugh Poly V design matches directly with the Itoh motorized roller or if an alternate non powered roller motor option is chosen Ralphs-Pugh can machine Poly V pulleys to your specification

Ralphs-Pugh Poly V inserts are sold as a component, or as complete rollers

Available with 2 shaft configurations

3PB44J43-4 - 7/16" hex - spring loaded through shafts or drilled and tapped  ends 5/16-18 x 1.00” deep
3PB50J43-4 - 1/2" round - drilled and tapped 5/16-18 x 1.00” deep

Safety considerations:  Poly V belts have very little elongation or stretch.  Guards or shields should be installed anywhere personnel could come into contact with them due to nip points.   

2.50” Roller Tube OD Inserts

• Machined out of Steel or Stainless steel
• Roller center distances start at 3.00”

Insert effective diameter (OD) is dependent on whether final diameter with belt installed must be less than roller tube diameter.

Standard roller tube is 2.50” OD x .120” wall thickness

• Insert has 1 ABEC-1 precision ball bearing
• Insert is to be welded to the tube end for strength and concentricity.

Poly V Belt Configuration

• Accommodates Hutchinson ConveyXonic  “J” or “K” belts with up to a maximum of 8 ribs per belt dependent on roller centers and loading – See how to determine in “Application Information Required”.
• Belts are available from Ralphs-Pugh

Ralphs-Pugh Poly V design matches directly with the Itoh motorized roller or if an alternate non powered roller motor option is chosen Ralphs-Pugh can machine Poly V pulleys to your specification

Ralphs-Pugh Poly V inserts are sold as a component, or as complete rollers

Standard shaft configuration is 11/16” hex, spring loaded or fixed

Part Number: 34PB68(J or K belt)(Effective diameter of insert in mm. ) – Up to 8

Safety considerations:  Poly V belts have very little elongation or stretch.  Guards or shields should be installed anywhere personnel could come into contact with them due to nip points.  

Application Information Required

• Roller center distance
• Zone length
• Max pallet weight
• Footprint of pallet or dimensions of load to be conveyed
• Max load per roller
• Max load per zone
• Speed of conveyer
• Will conveyor be loaded from both sides?  This will determine effective diameter and guarding issues

Features of Poly V Inserts and Rollers

1.90” Series

• One motorized roller can power up to 30 slave rollers depending on application criteria
• Poly V belts don’t slip or stretch like “O” rings and are low maintenance
• Reduced noise levels
• Can be used with robotic picking due to the accuracy of electronic stopping and starting
• Insert diameter with belt installed can be smaller in diameter than tube OD allowing product to be transferred off the system in both directions.

2.50” Series

• Reduced noise levels
• Clean – No chains, grease or gear boxes
• Close rollers centers  - down to 3.00”
• Reduced maintenance - no lubrication necessary vs chain and sprocket drive systems
• Can be used with robotic picking due to the accuracy of electronic stopping and starting
• Tighter roller centers than chain and sprocket configurations
• Insert diameter with belt installed can be smaller in diameter than tube OD allowing product to be transferred off the system in both directions.
• Can move pallet loads up to 3300 pounds – dependent on application data and chosen drive method

Contact Customer Service for a detailed catalog
of Ralphs-Pugh products, 1-800-486-0021