ppipella

Lagging

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Vulcanized Lagging

  • In-House Lagging Facilities - Precision Controlled
  • 60 Duro standard - 45 & 70 Duro optional - others on request
  • SBR standard - Neoprene &MSHAoptional - others on request
  • Available in a wide variety of thicknesses

HERRINGBONE GROOVE LAGGING (HBG)

The style of lagging required is usually influenced by operating conditions. In this Tractor style grooving, the points do not meet in the middle. This is normally used in drive pulleys. (3/8" minimum thickness)

CHEVRON GROOVE LAGGING (CHE)

Some prefer having the points meet, as done in Chevron. This is also used primarily on drive pulleys. (3/8" minimum thickness)

DIAMOND GROOVE LAGGING (DIA)

Diamond, or double HBG is primarily, used for reversing conveyor drive pulleys. It is also often used for spare pulleys when one doesn’t know the direction of rotation. (3/8" minimum thickness)

CIRCUMFERENTIAL GROOVE LAGGING (CIR)

This is used on non-drive pulleys for really wet applications OR for cold temperatures. It allows the lagging to deflect and keeps material from building up on the lagging. (3/8" minimum thickness)

LORIG®ALIGNER GROOVE LAGGING (LOR)

The lagging is machined flat, then grooves are machined in at an angle. As the rubber is compressed by the belt, the lagging will deflect towards the center, helping to track the belt. (3/4" min.)

CERAMIC LAGGING

Ceramic lagging is a premium lagging where the ceramic tiles are molded into a rubber compound. This makes for excellent traction, eliminates slippage, and offers excellent abrasion resistance.

CRAFT-LAG®REPLACEABLE LAGGING

Craft-Lag is bonded to rigid backing, which is then formed to a specificdiameter. Craft-Lag can be used with or without retainers and is ideal for mining, crushed stone, sand and gravel, cement, agriculture, food processing, coal mining, power plants, feed and grain, and general industry.

Craft-Lag®

  • Factory hot vulcanization under pressure assures the best possible bond of rubber to backing plate
  • Steel backing plates are precision formed at the factory to fit each individual pulley
  • Metal retainers are permanently welded or bolted to the pulley face to securely hold the pads in place
  • Self cleaning of the pulley surface occurs due to spaces between the pads and double grooving
  • Pads are field replaceable
 

 

EZ-LAG™

  • On the spot re-laggin
  • Reduces inventory
    • Eliminates stocking various sizes
  • Field Formable
    • Replace the laggin pads at the job site
  • Interchangeable with PPI Craft-Lag® and Holz lagging
 

Fas-Lag®

Available at our nationwide service centers

  • Retrofit and/or field replaceable
  • Sized to fit our Heavy Duty, Mine Duty & Quarry Duty Max
  • Standard black SBR 60+/-5 durometer
  • Available in other compounds & colors
 

VEC (Vulcanized Engineered Ceramic) Lagging

  • Our process starts with a lagging that has been hot vulcanized to the pulley, for the most reliable bond possible
  • We then use our patented technique to embed ceramic tiles into the hot vulcanized lagging
  • Tile coverage can be adjusted
  • Our unique tile shape allows use on smaller diameter pulleys
  • Choices of lagging grooving depending on the percentage of tile coverage
  • For use on fabric belting only
 

 

Lagging Properties

 

LAGGING COMPOUND CHEMICAL RESISTANCE PROPERTIES Remarks
Material Shore A Duro ±5 Color Oil & Gas Animal/ Veg. Oils Alcohols Alkalies Acids Oxygen Solvent
SBR 45, 60, 70, 80, 90 BLACK D C B C C+ B Low Cost
NEOPRENE 45*, 60*, 75 BLACK C+ B B+ A B D+ Grain & MSHA
URETHANE 45, 60, 90 RED B+ B C+ D D+ D Low Temp
NITRILE 45, 60 BLACK B+ B+ C+ B+ B D Oil Resistant
EPDM 60-BLK, 70-WHT BLK/WHT D B C+ B+ B B+ High Temp
NATURAL 60, 70-BLK/60-WHT BLK/WHT D C B C C+ B  
NEOPRENE (FDA) 60 WHITE C+ B B+ A B D+ Food Service
NITRILE (FDA) 50, 90 WHITE B+ B+ C+ B+ B D Food Service
                   
LAGGING COMPOUND ENVIRONMENTAL RESISTANCE PROPERTIES
Material Shore A Duro ±5 Color Oxidation Ozone Weathering Sunlight Water Flame Heat
SBR 45, 60, 70, 80, 90 BLACK C+ D C C B+ D C+
NEOPRENE 45*, 60*, 75 BLACK B+ B B B+ B B * C+
URETHANE 45, 60, 90 RED B+ A B+ B+ B D+ C+
NITRILE 45, 60 BLACK C+ D C+ D+ B+ D B
EPDM 60-BLK, 70-WHT BLK/WHT B+ A A A A D B+
NATURAL 60, 70-BLK/60-WHT BLK/WHT C+ D C D+ A D C
NEOPRENE (FDA) 60 WHITE B+ B B B+ B B C+
NITRILE (FDA) 50, 90 WHITE C+ D C+ D+ B+ D B
                   
LAGGING COMPOUND PHYSICAL PROPERTIES
Material Shore A Duro ±5 Color Min Tensile Str. (psi) Elongation Max Temp Min Temp 300% Mod (psi) Tan Delta DIN Abrasion
SBR 45 BLACK 1900 600% 225 F -50 F 350 -- --
60 2000 450% 1100 0.36 187
70 2000 400% 1400 -- --
80 2400 400% -- -- --
90 N/A N/A -- -- --
NEOPRENE 45* BLACK 1500 400% 212 F -50 F 450 -- --
60* 2000 400% 1400 0.36 188
75 1850 290% -- -- --
URETHANE 45 RED 1960 710% 225 F -40 F 310 0.13 130
60 2770 570% 1330 0.13 130
90 4700 450% 2100 0.13 130
NITRILE 45 BLACK 1210 840% 250 F -40 F 190 -- --
60 1870 690% 390 -- --
EPDM 60 BLACK 1290 560% 300 F -40 F 350 -- --
70 WHITE 1080 520% 500 -- --
NATURAL 60 (BLK or WHT) -- 2750 500% 180 F -45 F 1070 -- --
70 (BLK) 1470 330% 1310 -- --
NEOPRENE (FDA) 60 WHITE 1200 600% 212 F -50 F 375 -- --
NITRILE (FDA) 50 WHITE -- -- 250 F -40 F -- -- --
90 -- -- -- -- --

 


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