This item has been added to My eBay for Guests. As a guest, you can: Track up to 10 items on this computer in My eBay Receive an email reminder for this item a few hours before it ends
The seller ended this listing early because the item is no longer available for sale.
If you are the winner, click the button above to check out right now!
Shipping Calculator
Weight
Origin Zip Code
0.50 Pounds
06111
Payment Methods
Credit Cards Phone: 1-888-474-1300
PayPal support@toolbuyers.com
M/O or Checks Mail @ 156 Pane Road Newington, CT 06111
Description
(12) New "J" Cobalt Jobber Drills - Precision Twist Drill. Made in the U.S.A. Fractional COBALT Jobber Drill (135 Deg. is the standard, but some smaller sizes are not split point). Manufactured by Precision Twist Drill.
Manufactured to National Aerospace standard 907. Made of heat resistant cobalt, they display higher red hardness which permits speeds up to 30% greater than high speed steel drills and are especially effective in drilling tough, high tensile strength materials like PH stainless steel, inconel, and titanium. The 135 Deg. split point is self-centering and reduces thrust. Sizes smaller than 1/16" have the standard point.
Technical Specification:
SIZE : "J"
DECIMAL EQUIV. : .2770
FLUTE LENGTH : 2-7/8"
OVER ALL LENGTH : 4-1/8"
FACTORS THAT INFLUENCE DRILLING: When selecting or designing drills for today's materials and equipment, there are a number of factors that will influence your choices. These choices will determine the success or failure of the drill. Here are the three basic factors to consider:
1. Depth of Hole
2. Feeds and Speeds
3. Fixturing
1) Depth of Hole:
In selecting a drill, one of the factors to consider is hole depth. The type of drill to apply will be determined by drill design. In sonsidering hole depth, four drill design features require examination. These include:
Web Thickness
Web Increase
Flute Form
Point Style and Geometry
2) Feeds and Speeds:
In Calculting feeds and speeds, consider the following:
Material - Material will determine the surface feet or revolutions per minute (RPM's).
Ductility of Material - Ductility of the material will determine the feed rate for ease of chip formation.
BHN Briness Hardness - Hardness along with ductility will determine the base tool material for the drill.
3) Fixturing:
Three elements of fixturing are important to successful drill performance. These include: rigidity, clearance for chips and passage for cutting fluids.
A)Rigidity - With regard to rigidity, ask the following questions: Does the part move in the fixture? Is the fixture mounted properly? Does the spindle have axial or radial play?
B)Clearance for Chips - Chip clearance is critical and the following needs to be assessed: Is there sufficient room for chip evacuation? Is the bushing the proper length? (Approximately 60% of drill lead) Is the bushing positioned on the part or is there clearance between the bushing and part to allow for chip evacuation?
C)Passages for Cutting Fluids - With regard to the use of cutting fluids, the following two inspections need to be made: Are there sufficient coolant lines? Are the coolant lines directed to the proper locations?
Please click here to buy my Techniks, Lyndex-Nikken, CNC USA, Bison & HPI CAT or BT CNC Tooling
Please click here to buy my Kurt Vises at great price in stock ready to ship!!!!
Please click here to buy my Techniks Collets & Collet Sets
Please click here to buy my Imported, Generic USA, Precision Twist Drill, OSG, YG-1 Cutting Tools & Huot Dispensers or Cabinets
Please click here to buy my Carbide End Mills, Carbide Roughers & High-Performance End Mills
Please click here to buy my Turning, Milling & Top Notch Carbide Inserts
Shipping Info
Click to Calculate Shipping
Weight : 0.50 Pounds
Inventory # : PTD-CO-J
All orders upto 150 lbs. can be shipped via Fedex (Fedex Express/Corporation), UPS (United Parcel Service Inc.) or USPS (United States Postal Service). You can check or calculate the shipping charge here: (Source Zip Code 06111)
Orders above 150 lbs. must be shipped via a freight carrier. Check out:
All estimates are subject to additional charges depending on the area in which you are located. The carriers will assess an extra charge if delivery location is in a residential area and/or the services of a lift gate are required.
Tool Buyers Network encourages buyers who wish to use their own FedEx and UPS account. Just e-mail us at shoptoolauctions@aol.com or include account # with the payment.
Handling Fees will apply to all UPS, FedEx & USPS shipments.
Domestic: $2.00
Canada & Mexico: $3.00
International: $4.75
Delicate (eg. Digital Indicator or Caliper), Expensive (Precision Tools) & Large Items / Listings (such as Grinding Wheels, Micrometers Sets and other Large Lots) will require special handling & charges will be determined according to the weight & dimension of the items.
Our Automated Checkout accepts PayPal, the #1 payment service in online auctions! Now Available for International Users
Payment Methods & Information
Use our Express Checkout
If you are the winner, click the button above to check out right now!
We accept following payment methods
American Express
Visa / Mastercard
Discover Card
Money Orders
Cashier's Checks
Personal Checks
PayPal (support@toolbuyers.com)
Note: PayPal E-mail address or account name is support@toolbuyers.com
Mailing Information for (Cashier Checks, Personal Checks & Money Orders)
Please go to http://corporate.auctionworks.com/pay.asp to pay for your items. Or refer to the "You Won" email we sent you. This ensures you are sending the right amount of money and taking advantage of any shipping discounts. Thanks!!
Track up to 10 items on this computer in 
)
