Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

MICRO 100 Boring Bar: Top Rake Chipbreaker, 3/16 in Shank Dia., Bright (Uncoated) - Machining
MICROMachining

MICRO 100 Boring Bar: Top Rake Chipbreaker, 3/16 in Shank Dia., Bright (Uncoated)

The MICRO 100 Boring Bar: Top Rake Chipbreaker (MPN QBT-050400) is a bright (uncoated), right-hand machining tool with a 3/16 in shank diameter. 3G Electric interprets customer demand and delivers this genuine…

SKU 3G-OTH-245624

Also listed as: QBT050400 · QBT 050400

Brand
MICRO
Item
100 Boring Bar: Top Rake Chipbreaker, 3/16 in Shank Dia., Bright
Category
Machining
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

MICRO
Manufacturer Part Number
QBT-050400
Type
Bright (Uncoated), Right Hand
Shank Dia.
3/16 in

Technical Documents

No technical documents available for this product.
Request documentation
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

MICRO Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The MICRO 100 Boring Bar: Top Rake Chipbreaker (MPN QBT-050400) is a bright (uncoated), right-hand machining tool with a 3/16 in shank diameter. 3G Electric interprets customer demand and delivers this genuine industrial equipment across 14 departments — and far more — with specialist depth in combustion, pumps and controls as a trust anchor.

Frequently Asked Questions

What is the MICRO 100 QBT-050400 boring bar used for?

The MICRO 100 QBT-050400 is a right-hand boring bar with a top rake chipbreaker, designed for internal turning and boring operations in metalworking. It is commonly used in lathes and CNC machines to enlarge or finish pre-drilled holes with precision, especially in tight spaces where a small shank diameter is required.

What are the specifications of the MICRO 100 QBT-050400 boring bar?

The MICRO 100 QBT-050400 boring bar has a 3/16 in shank diameter, is bright (uncoated), and features a top rake chipbreaker for improved chip control. It is a right-hand tool, meaning it cuts when fed from right to left. The manufacturer part number is QBT-050400, and it is made by MICRO.

Where to buy the MICRO 100 QBT-050400 boring bar worldwide?

You can source the MICRO 100 QBT-050400 boring bar through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time; we provide this MICRO 100 tool as part of our extensive machining product range.

How to select the correct MICRO 100 boring bar for my application?

To select the correct MICRO 100 boring bar, match the shank diameter to your tool holder (e.g., 3/16 in for the QBT-050400). Choose a right-hand bar for conventional lathe rotation. The top rake chipbreaker design is ideal for softer materials like aluminum or brass. Always verify the insert geometry and coating (bright uncoated here) against your workpiece material.

Used in

Common applications for MICRO
Aerospace machining — MICRO 100 SCLCR toolholders for turning titanium alloys
Automotive production — MICRO 100 SR series blanks for custom drill bits in engine blocks
Plastic component fabrication — MICRO 100 SFL downcut router bits for acrylic sheet cutting
Aluminum extrusion finishing — MICRO 100 SFA upcut router bits for deburring profiles
Mold and die making — MICRO 100 SCMCN toolholders for profiling hardened steel cavities
Composite panel trimming — MICRO 100 SFPM spiral router bits for carbon fiber laminates

MICRO Products

3G Electric supplies MICRO machining. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

You might also need

Burners & Combustion Pumps & Compressors Spare Parts All Products

Compatible alternatives & equivalents

Cross-referenced by specification & description
MICRO 100 Boring Bar: Top Rake Chipbreaker, 3/16 in Shank Dia., Bright (Uncoated), Right Hand (MPN QBT-050500)
MICRO
MICRO 100 Boring Bar: Top Rake Chipbreaker, 3/16 in Shank Dia., Bright (Uncoated), Right Hand (MPN QBT-050500)
MICRO 100 Boring Bar: Top Rake Chipbreaker, 3/16 in Shank Dia., Bright (Uncoated), Right Hand (MPN QBT-070200)
MICRO
MICRO 100 Boring Bar: Top Rake Chipbreaker, 3/16 in Shank Dia., Bright (Uncoated), Right Hand (MPN QBT-070200)
MICRO 100 Boring Bar: Top Rake Chipbreaker, 3/16 in Shank Dia., Bright (Uncoated), Right Hand (MPN QBT-050200)
MICRO
MICRO 100 Boring Bar: Top Rake Chipbreaker, 3/16 in Shank Dia., Bright (Uncoated), Right Hand (MPN QBT-050200)
MICRO 100 Boring Bar: Top Rake Chipbreaker, 3/16 in Shank Dia., Bright (Uncoated), Right Hand (MPN QBT-110750)
MICRO
MICRO 100 Boring Bar: Top Rake Chipbreaker, 3/16 in Shank Dia., Bright (Uncoated), Right Hand (MPN QBT-110750)
MICRO 100 Boring Bar: Top Rake Chipbreaker, 3/16 in Shank Dia., Bright (Uncoated), Right Hand (MPN QBT-060200)
MICRO
MICRO 100 Boring Bar: Top Rake Chipbreaker, 3/16 in Shank Dia., Bright (Uncoated), Right Hand (MPN QBT-060200)
MICRO 100 Boring Bar: Top Rake Chipbreaker, 3/16 in Shank Dia., Bright (Uncoated), Right Hand (MPN QBT-110500)
MICRO
MICRO 100 Boring Bar: Top Rake Chipbreaker, 3/16 in Shank Dia., Bright (Uncoated), Right Hand (MPN QBT-110500)

More from MICRO

View all MICRO parts
MICRO 100 Boring Bar: Top Rake Chipbreaker, 1/2 in Shank Dia., AlTiN, Right Hand, 0.0060 in Radius (MPN QBT-4601600X)
MICRO
MICRO 100 Boring Bar: Top Rake Chipbreaker, 1/2 in Shank Dia., AlTiN, Right Hand, 0.0060 in Radius (MPN QBT-4601600X)
MICRO 100 Boring Bar: Top Rake Chipbreaker, 3/16 in Shank Dia., AlTiN, Right Hand, 0.0040 in Radius (MPN QBT-070600X)
MICRO
MICRO 100 Boring Bar: Top Rake Chipbreaker, 3/16 in Shank Dia., AlTiN, Right Hand, 0.0040 in Radius (MPN QBT-070600X)
MICRO 100 Boring Bar: Top Rake Chipbreaker, 1/2 in Shank Dia., AlTiN, Right Hand, 0.0060 in Radius (MPN QBT-4901600X)
MICRO
MICRO 100 Boring Bar: Top Rake Chipbreaker, 1/2 in Shank Dia., AlTiN, Right Hand, 0.0060 in Radius (MPN QBT-4901600X)
MICRO 100 Boring Bar: Top Rake Chipbreaker, 3/16 in Shank Dia., AlTiN, Right Hand, 0.0040 in Radius (MPN QBT-060500X)
MICRO
MICRO 100 Boring Bar: Top Rake Chipbreaker, 3/16 in Shank Dia., AlTiN, Right Hand, 0.0040 in Radius (MPN QBT-060500X)
MICRO 100 Boring Bar: Helical Back Rake, 1/8 in Shank Dia., Bright (Uncoated), Right Hand (MPN HBB-020062)
MICRO
MICRO 100 Boring Bar: Helical Back Rake, 1/8 in Shank Dia., Bright (Uncoated), Right Hand (MPN HBB-020062)
MICRO 100 Boring Bar: Top Rake Chipbreaker, 3/16 in Shank Dia., Bright (Uncoated), Right Hand (MPN QBT-120500)
MICRO
MICRO 100 Boring Bar: Top Rake Chipbreaker, 3/16 in Shank Dia., Bright (Uncoated), Right Hand (MPN QBT-120500)
MICRO 100 Boring Bar: Helical Back Rake, 1/4 in Shank Dia., Bright (Uncoated), Right Hand (MPN HBB-2101250)
MICRO
MICRO 100 Boring Bar: Helical Back Rake, 1/4 in Shank Dia., Bright (Uncoated), Right Hand (MPN HBB-2101250)
MICRO 100 Boring Bar: Top Rake Chipbreaker, 1/4 in Shank Dia., Bright (Uncoated), Right Hand (MPN QBT-180500)
MICRO
MICRO 100 Boring Bar: Top Rake Chipbreaker, 1/4 in Shank Dia., Bright (Uncoated), Right Hand (MPN QBT-180500)