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MartinSF-BBQD Idler Bushing – SF Series, 2-1/8 in Bore, Two Internal Ball Bearings, 4-5/8 in Flange

Condition: New – Open box
Condition Note: New Old Stock

Availability:

2 in stock

QD idler bushing, SF series, 2-1/8 in (53.98 mm) bore, two internal ball bearings, 4-5/8 in six-hole flange. Radial capacity 2,550 lb at 100 rpm; steel body.

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List Price

$169.11

2 in stock

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Specifications

Key Specifications

MFR / BrandMartin
MPNSF-BB
GTIN697950262291
ModelSFBB
ID2-1/8 in (53.98 mm)

Technical Specifications

MaterialSteel
ConditionNew – Open box
TypeQuick Disconnect Idler Shaft Bushing
Category Id35565
CurrencyUSD
Condition NoteNew Old Stock
Application TypesConveyor idlers; take-up idlers; belt and chain tensioning
Mpn VariantsSF-BB; SFBB; SF BB
Overall Length5 in (127 mm)
Rolling ElementsBall
Item Weight2.27 kg (5.0 lb)
Seller Part Number: BO2#MXNMJY

Product Description

What this part is

A QD (quick-detachable) idler bushing that turns a stationary shaft into a rotating idler for belt and chain drives. Two internal ball bearings carry the rotating flange. Bore Diameter: 2-1/8 in (53.98 mm). Bushing Series: SF. Rolling Elements: Ball. Material: Steel. Martin is Martin Sprocket & Gear.

What these specs mean in practice

Radial Load Capacity: 2,550 lb at 100 rpm; 1,180 lb at 1,000 rpm. Capacity falls as idler speed rises.

Mounting data

Flange Diameter: 4-5/8 in (117.5 mm). Flange Thickness: 9/16 in (14.3 mm). Flange Bolt Holes: 6. Overall Length: 5 in (127 mm). Bore Length: 2-1/16 in (52.4 mm). Setscrew Size: 5/16-18. Item Weight: 2.27 kg (5.0 lb).

Quantity and configuration

Unit Quantity: 1 Pc. One idler bushing with its two internal ball bearings.

Interchange guidance

MPN Variants: SF-BB; SFBB; SF BB. Mates with SF-series QD sprockets, sheaves and pulleys. Application Types: Conveyor idlers; take-up idlers; belt and chain tensioning.

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