Can this be used in a boring bar holder on a milling machine, or is it only for a lathe?

If you are asking if it can be used in a boring head the answer is no. As this is a right-hand boring bar and you would have to run the machine in reverse to get it to cut. If you ran it in reverse without some sort of mod to the boring head the head would unscrew from the shank as soon as you began to cut causing a spectacular crash. You need a left-hand bar. With that you can run in forward with no worries.

is this actually a 3/4" or a 20mm, i need a 3/4.

3/4'' is the size of the shank itself. I don't think it would be a mm bigger as most common lathe/mill tools are inch instead of mm

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3/4" Lathe Internal Boring Bar Turning Tool Holder S20R-MWLNR08 with Indexable Carbide Turning Insert WNMG432

Product ID: 170567829

🔩Includes 10 TiN-coated carbide inserts

⚙️3/4" shank diameter for precision fit

🛠️High-quality alloy steel with nickel coating

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Description

🔧 Elevate your machining game with precision and durability that professionals trust!

BUILT TO LAST - Nickel-coated alloy steel bar delivers exceptional toughness and wear resistance
INSERT INNOVATION - 10 carbide WNMG080408 inserts with TiN coating for ultra-smooth finishing & semi-finishing
PRECISION PERFECTED - 3/4" (20mm) shank diameter ensures stable, accurate boring every time
EFFORTLESS MAINTENANCE - Quick-change inserts and included wrench minimize downtime and maximize productivity
VERSATILE COMPATIBILITY - Ideal for manual and turret lathes, optimized for cutting oil and coolant environments

The ASZLBYM 3/4" Boring Bar S20R-MWLNR08 is a high-performance lathe tool holder crafted from nickel-coated alloy steel for superior toughness and wear resistance. It comes with 10 TiN-coated carbide inserts designed for finishing and semi-finishing, ensuring precise, low-friction cutting. Compatible with manual and turret lathes, this 8" long, 20mm diameter boring bar is engineered for durability and easy insert changes, making it a must-have for professional machinists seeking reliable, high-precision internal boring solutions.

Specifications

ASIN	B07Z9XZNX8
Best Sellers Rank	#35,456 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #6 in Turning Inserts
Date First Available	October 18, 2019
Item Weight	1.17 pounds
Item model number	S20R-MWLNR08 + WNMG432
Manufacturer	Xuzhou bai yi metal Technology Co., Ltd
Package Dimensions	9.13 x 4.29 x 1.61 inches

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53422CFA

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In stock

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Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Senegal.

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TrustScore 4.5 | 7,300+ reviews

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