Seal Types

Typical application Typical environment Seal Type Seal Cross Section Contamination Exclusion Speed limit
Lawn and Garden Applications Less contaminative environment R, RST
mild
moderate
high - relubricatable
severe -maintenance free
maximum - maintenance free
3500 RPM
Combine power transmission (PT) Indirect contamination, airborne dust, light/moderate water exposure F
mild
moderate
high - relubricatable
severe -maintenance free
maximum - maintenance free
3500 RPM
Idler sprockets, conveyor rollers, combine PT, baler drive rolls Indirect contamination, airborne dust, light/moderate water exposure G
mild
moderate
high - relubricatable
severe -maintenance free
maximum - maintenance free
3000 RPM
Planters: press wheel, gauge wheel Light direct contamination, at one foot distance from ground 2 Lips, Y, DBL
mild
moderate
high - relubricatable
severe -maintenance free
maximum - maintenance free
2000RPM
Disc harrow and rolling basket relubri- catable, baler idler rolls, augers with direct crop contanct Direct ground and crop contact, moisture exposure 3 Lips, P, TRL
mild
moderate
high - relubricatable
severe -maintenance free
maximum - maintenance free
800 RPM
Rolling basket maintenance free tillage FD units Tillage - direct ground contact, moisture exposure 4 Lips
mild
moderate
high - relubricatable
severe -maintenance free
maximum - maintenance free
400 RPM
Rolling basket maintenance free tillage FD units Tillage - direct ground contact, moisture exposure 5 Lips
mild
moderate
high - relubricatable
severe -maintenance free
maximum - maintenance free
400 RPM
Disc harrow maintenance free tillage trunnion units (TTU) and pillow block (TPU), HUB units Tillage - direct ground contact, moisture exposure 6 Lips
mild
moderate
high - relubricatable
severe -maintenance free
maximum - maintenance free
400 RPM
Disc harrow maintenance free tillage trunnion units (TTU), HUB units Tillage - direct ground contact, moisture exposure 7 Lips
mild
moderate
high - relubricatable
severe -maintenance free
maximum - maintenance free
400 RPM

PEER Product Validation And Sealing Solution

Lab Testing / Mud Slurry Testing

PEER ́s Research and Development Center utilizes mud slurry testing to thoroughly study new seal concepts before extensive  eld tests are conducted to validate application performance. The test is performed to determine the e ectiveness of the bearing sealing device to withstand contamination intrusion under aggressive environmental conditions. Seal designs are tested against competitive parts in side-by-side mud slurry testing.

The various seal designs show a different level of performance in the contaminated environment of application.

PEER sealing performance overview

Seal performance is one of the most crucial factors influencing bearing life and field performance in agricultural applications. PEER offers solutions which fit environmental and machine requirements.

Mud slurry testing can show the contamination exclusion provided by a 6 lip TILLXTREMETM seal compared to a conventional 3 lips seal.

Contamination ingress with 3 lips seal design

   Bearing with 3 Lips

effect on raceway

effect on lubricant 

Contamination ingress with 6 lips seal design, maintenance free

   Bearing with 6 Lips

effect on raceway

effect on lubricant 

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