• 2D/3D/4D/5D SP/WC U Drill Insert Shallow Hole For SPMG/SPMT/WCMX/WCMT
  • 2D/3D/4D/5D SP/WC U Drill Insert Shallow Hole For SPMG/SPMT/WCMX/WCMT
2D/3D/4D/5D SP/WC U Drill Insert Shallow Hole For SPMG/SPMT/WCMX/WCMT

2D/3D/4D/5D SP/WC U Drill Insert Shallow Hole For SPMG/SPMT/WCMX/WCMT

Product Details:

Place of Origin: China
Brand Name: BWIN
Model Number: C20-2D16-35SP06

Payment & Shipping Terms:

Minimum Order Quantity: 1pcs/box
Price: Negotiable
Packaging Details: Plastic box
Delivery Time: 7 work days
Payment Terms: T/T, Western Union
Supply Ability: 1-10000pcs 7days
Get Best Price Contact Now

Detail Information

Product Name: SP / WC Shallow Hole Drill Model: C25-2D18-39WC03 Fast Drill Bits
Material: H13 Steel Workpiece: Cast Iron, Alloy Steel, Carbon Steel, Etc
Feature: High Hardenability Application: Drilling
Package: 1pcs/Plastic Box Service: OEM & ODM
High Light:

SP U Drill Insert


WC U Drill Insert


U Drill Tungsten Carbide Drill Bits

Product Description

2D/3D/4D/5D SP/WC U Drill Cnc Machine Shallow Hole Drill For SPMG/SPMT/WCMX/WCMT U-Drill Insert


Description of WC U drill

  • High quality H13 steel, earthquake resistant and wear-resistant
  • Innovative spiral groove design for smooth chip removal
  • Widen water outlet and extend service life
  • Update blade angle to improve drilling efficiency


U-drill cutting condition table

U drill cutting condition
workpiece Shank Dia(mm) Feed rate(mm/rev)
2D 3D 4D 5D
45 # steel/S45C
Recommended cutting speed
D13.0-D18.0 0.07-0.12-0.22 0.07-0.11-0.19 0.07-0.10-0.16 0.006-0.09-0.14
D18.5-D29.0 0.07-0.12-0.22 0.07-0.11-0.19 0.07-0.10-0.16 0.006-0.09-0.14
D29.5-D36.0 0.07-0.13-0.24 0.07-0.12-0.20 0.07-0.10-0.16 0.006-0.09-0.14
D37.0-D55.0 0.08-0.15-.027 0.08-0.13-0.22 0.08-0.13-0.20 0.07-0.10-0.16
D36.0-D68.0 0.09-0.16-0.30 0.09-0.15-0.25 0.09-0.14-0.21 0.08-0.11-0.18

Stainless steel/

Recommended cutting speed

D13.0-D18.0 0.05-0.10-0.17 0.05-0.09-0.14 0.05-0.09-0.12 0.04-0.08-0.10
D18.5-D29.0 0.05-0.10-0.17 0.05-0.09-0.14 0.05-0.09-0.12 0.04-0.08-0.10
D29.5-D36.0 0.05-0.11-0.18 0.05-0.01-0.15 0.05-0.09-0.13 0.05-0.08-0.11
D37.0-D55.0 0.06-0.12-0.20 0.06-0.11-0.17 0.06-0.10-0.14 0.05-0.09-0.13
D36.0-D68.0 0.08-0.13-0.22 0.07-0.12-0.19 0.07-0.11-0.16  
Note: For reference only(Lower limit value - recommended value - upper limit value)


Product Details of carbide drill bits

1. Blade installation position: Easy replacement and low cost after blade wear

2. Internal cooling water outlet hole: fully utilize the cutting function of the drill bit to ensure machining reliability

3. Widening the chip removal slot: effectively avoiding chip accumulation and improving service life

4. Overall grinding: Appearance grinding, overall nickel plating, rust prevention

5. Internal cooling water outlet: With screw teeth inside, it is easy to install and can be used on a lathe

2D/3D/4D/5D SP/WC U Drill Insert Shallow Hole For SPMG/SPMT/WCMX/WCMT 0

2D/3D/4D/5D SP/WC U Drill Insert Shallow Hole For SPMG/SPMT/WCMX/WCMT 1

Comparison of cutting parameters between U-drill and ordinary drill bits

workpiece U Drill Ordinary drill Improve efficiency 100%
Feed rate
wire speed
Feed rate
wire speed
45 steel 0.06~0.18 2000~3500 200~275 0.04~0.1 400~1000 10 600
Hardened steel 0.03~0.10 1500~2000 60~150 0.03~0.08 Unable to drill 5 1000
stainless steel 0.05~0.15 1500~3000 80~150 0.02~0.08 200~800 8 750
aluminium alloy 0.1~0.18 3000~4500 300~385 0.1~.015 1000~2000 20 300
titanium alloy 0.08~0.16 1000~2000 40~50 0.04~0.06 200~800 10 500
  • In the initial drilling, it is recommended to use the cutting value in the middle range, and then adjust the cutting parameters (according to the tool wear) to achieve the best cutting effect. The above cutting parameters are for 2D and 3D types, and for 4D types, the drilling parameters should be correspondingly reduced by 15%.
  • When the cooling method is only external cooling, the cutting speed should be reduced by 10%.
  • For the processing of austenitic stainless steel, internal cooling must be used.
  • When starting external drilling on the inclined plane, or when there are pre drilled and intersecting holes in the parts, or when drilling multi-layer plates, the feed rate needs to be reduced to about one-third of the recommended value.



  • When using the lathe, it is easy to crush and burn the U-drill when using it with a deviation from the center
  • When using small-sized U-drills, high speed and high feed are required, because the lower the parameters, the greater the cutting resistance, and the situation of burning the tool is easy to occur



  • Factory---We have our own factory with modern standard indexable blade production lines, CNC turning tool bar production lines, overall carbide end mill production lines, and PVD coating production lines; The product specifications and models are complete, and can be designed and produced according to customers' non-standard customization needs;
  • Sample---Support free samples, sample preparation for 3-5 days, mass production for 8-10 working days;
  • Logistics---Our shipping channels include sea, land, and air transportation;
  • After sales---We have a complete after-sales system, and cooperation is not the end, it is the beginning. If you have any after-sales problems, please feel free to contact us, and we will solve them for you as soon as possible.


Q1: Vibration?


1. Minimize overhang as much as possible

2. Check if the power tools and parts are securely clamped

3. Increase feed rate

4. For soft materials, cutting speed can be increased

5. For hard materials, the cutting speed should be reduced


Q2: Cutting blockage?


1. Increase the feed rate to crush the cutting

2. Increase coolant pressure


Q3: Is the blade not securely fixed?


1. Clean the blade holder

2. Check if the blade holder is damaged and replace the drill bit if necessary


Q4: Short tool life


1. Check the material comparison table and cutting parameters

2. Increase coolant flow rate

3. Better clamping of tools and/or fastening of parts

4. Inspect/repair the spindle

5. ed should be reduced

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