Family built. Field proven. Since 1994.Talk to our team: 765-617-4994

Equipment comparison

Compare the catalog references.

Review up to three equipment or parts references, then ask Knopp to verify the exact model, fit and project scope.

Decision view

Focus the comparison.

2 differing fields and 5 shared fields across these references.

Equipment comparison
CompareA · B158-1Weld-In Bushings for Center Core Tube - 1-5/8" – 1" 1-7/8"B · B138-1Weld-In Bushings for Center Core Tube - 1-3/8" – 1" 1-5/8"
CategorySharedParts & componentsParts & components
TypeSharedWeld-In Bushings for Center Core TubeWeld-In Bushings for Center Core Tube
SectionSharedAuger Shafts and Coupling BoltsAuger Shafts and Coupling Bolts
ManufacturerSharedPerry EquipmentPerry Equipment
Fits Tube SizeDifferent1-7/8"1-5/8"
Bushing outside diameter – inside diameterDifferent1-5/8" – 1"1-3/8" – 1"
Current pricingSharedRequest an itemized current quoteRequest an itemized current quote
Your selection
Remove item
Remove item

Compare one detail at a time. Letters match your selections below.

CategoryShared

AB158-1: Weld-In Bushings for Center Core Tube - 1-5/8" – 1" 1-7/8"
Parts & components
BB138-1: Weld-In Bushings for Center Core Tube - 1-3/8" – 1" 1-5/8"
Parts & components

TypeShared

AB158-1: Weld-In Bushings for Center Core Tube - 1-5/8" – 1" 1-7/8"
Weld-In Bushings for Center Core Tube
BB138-1: Weld-In Bushings for Center Core Tube - 1-3/8" – 1" 1-5/8"
Weld-In Bushings for Center Core Tube

SectionShared

AB158-1: Weld-In Bushings for Center Core Tube - 1-5/8" – 1" 1-7/8"
Auger Shafts and Coupling Bolts
BB138-1: Weld-In Bushings for Center Core Tube - 1-3/8" – 1" 1-5/8"
Auger Shafts and Coupling Bolts

ManufacturerShared

AB158-1: Weld-In Bushings for Center Core Tube - 1-5/8" – 1" 1-7/8"
Perry Equipment
BB138-1: Weld-In Bushings for Center Core Tube - 1-3/8" – 1" 1-5/8"
Perry Equipment

Fits Tube SizeDifferent

AB158-1: Weld-In Bushings for Center Core Tube - 1-5/8" – 1" 1-7/8"
1-7/8"
BB138-1: Weld-In Bushings for Center Core Tube - 1-3/8" – 1" 1-5/8"
1-5/8"

Bushing outside diameter – inside diameterDifferent

AB158-1: Weld-In Bushings for Center Core Tube - 1-5/8" – 1" 1-7/8"
1-5/8" – 1"
BB138-1: Weld-In Bushings for Center Core Tube - 1-3/8" – 1" 1-5/8"
1-3/8" – 1"

Current pricingShared

AB158-1: Weld-In Bushings for Center Core Tube - 1-5/8" – 1" 1-7/8"
Request an itemized current quote
BB138-1: Weld-In Bushings for Center Core Tube - 1-3/8" – 1" 1-5/8"
Request an itemized current quote

Source: imported owner catalog, formatted October 7, 2026. A blank or differing catalog field is not a compatibility decision. Knopp confirms manufacturer, exact model, capacity, accessories, availability, freight and installation for the written quote.

Request review of these itemsChange comparison