Sherline P/N 2261 RH 55° and 80° 3/8″ Boring Bars w/Carbide Inserts
Sherline P/N 2261 RH 55° and 80° 3/8″ Boring Bars w/Carbide Inserts
Sherline P/N 2261 RH 55° and 80° 3/8″ Boring Bars w/Carbide Inserts
Sherline P/N 2261 RH 55° and 80° 3/8″ Boring Bars w/Carbide Inserts
Sherline P/N 2261 RH 55° and 80° 3/8″ Boring Bars w/Carbide Inserts
Sherline P/N 2261 RH 55° and 80° 3/8″ Boring Bars w/Carbide Inserts
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Sherline P/N 2261 RH 55° and 80° 3/8″ Boring Bars w/Carbide Inserts
Sherline P/N 2261 RH 55° and 80° 3/8″ Boring Bars w/Carbide Inserts
Sherline P/N 2261 RH 55° and 80° 3/8″ Boring Bars w/Carbide Inserts
Sherline P/N 2261 RH 55° and 80° 3/8″ Boring Bars w/Carbide Inserts
Sherline P/N 2261 RH 55° and 80° 3/8″ Boring Bars w/Carbide Inserts
Sherline P/N 2261 RH 55° and 80° 3/8″ Boring Bars w/Carbide Inserts

Sherline P/N 2261 RH 55° and 80° 3/8″ Boring Bars w/Carbide Inserts

Sherline
Price:
$170.00
Stock:
In stock

Description

I have been told by customers that the inserts are often gold coloured instead of grey as shown in the photos from Sherline. Because of this I have opened the package and found that the boring bars in this package actually include one with a grey coloured insert and one with a gold coloured insert. The actual inserts just have a different coating. I think this must have occurred as Sherline transitioned from one insert supplier to another. I am including a photo from Sherline as well as the photos of the opened product. 

These 3/8″ diameter boring bars feature a carbide insert secured with a Torx® screw and come complete with a Torx wrench. Choose between:

  • A 55° right-hand insert, suitable for starting holes as small as 3/4″, ideal for reaching sharp internal corners

  • An 80° insert, which fits into a smaller 1/2″ hole and offers added strength for roughing operations

Each holder measures 3-1/4″ long and can bore to a depth of just over 2″ when properly secured with two set screws. Manufactured from durable 1144 Stressproof® steel with a black oxide finish, these tools are available individually or as a discounted set.

Why Choose Carbide Insert Tools?

While high-speed steel (HSS) remains common for small machine tools due to its low cost and resharpenability, carbide inserts offer significant advantages in demanding applications:

  • Longer-lasting edges when cutting hard metals like stainless steel, titanium, or abrasive materials such as carbon fiber

  • Faster cutting speeds and greater efficiency

  • Each insert can be rotated 180°, effectively giving you two cutting edges per insert

Although carbide inserts can’t be resharpened, their durability and versatility make them a preferred choice in professional machine shops.

 

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