Close Tolerance, High Speed Precision Machining Since 1967. Portland Precision Manufacturing is dedicated to producing top quality precision machined parts and products that meet or exceed our customers' expectations. With in-house engineering assistance, a full range of secondary services, and the capabilities to provide prototypes and short

Gundrilling is a deep hole drilling process that uses a long, thin cutting tool to produce holes in metal at high depth-to-diameter ratios. Gun drilling is effective in diameters from 1 - 50. A gundrill tool differs from a conventional twist drill by its unique head geometry; a standard gundrill has a single effective cutting edge that

7/25 · The super fast way is a kenametal deep hole coolant through drill that takes about 17 seconds but costs around $400. It doesn't like drilling through interrupted cuts, and we have a few parts that will have 1 - 3 intersecting holes. You definately need through spindle coolant for this to work. We have 1000 PSI to play with.

Ryerson Deep Hole Drilling Capabilities. Outside diameter range: 3 ¾" - 17". Inside diameter range: 2" - 6". Length range: 30" - 240". Standard tolerance: +/- 0.030" with 125 RMS surface finish. Using special tools and machinery, deep hole drilling bores a hole in solid metal. This results in deeper and straighter holes into the metal

Easy Jig Gen 3 Multi-Platform. The go-to jig for AR-15, AR-9, & AR-10 80% projects. $329 at 80% Arms Jump to Details. Show more (2 items) And for Polymer80 Glock-style builds, check these quick links (selling fast): PF940V2 for Glock 17 Gen 3. PF9SS Single Stack for Glock 43. PF940SC for Glock 26/27 Gen 3.

When using FS Aluminum Gun Drilling Oil in gun drilling applications, or other metalworking applications, one can expect the following characteristics: Superior anti-welding/ wetting characteristics, dramatically improving insert, tap, and drill life Increased speed and feed rates, especially with low machine-ability materials Very low foaming, providing more efficient oil and additive

11/3 · Create a pilot hole at least 1 to 2 diameters deep and 0.0005 – 0.001″ larger than the gun drill. Position the gun drill in the hole before starting rotation. Always stop rotation before

Ryerson offers drilled bar and deep hole drilling services. Our special tools and machinery can bore a hole in solid metal, deeper, straighter, with tighter 

The gun drilling process is ideal for smaller hole diameters, up to 50 mm [2.00 in]. The gun drilling process differs from BTA drilling due to coolant entry and chip removal; gundrills introduce coolant internally through a small hole within the tool, and chips are removed by coolant through a groove outside the length of the tool.

With RT 100 Al optimal chip formation is achieved at the cutting edge in the entire material range – from tough aluminium wrought alloys to aluminium cast alloys with high silicon content. This

Gun drilling can be done, with limited performance, on common CNC machines. Holes with a depth-to-diameter ratio of 20:1 or greater generally require dedicated equipment to achieve the highest productivity and process reliability, and can reach extreme ratios of 400:1 or greater. Gun Drilling vs BTA Drilling

To do this, the drill must be placed on a handrail at an angle of about 45 ° and pressed with its back to the edge of the circle, without touching the cutting edge. On the lintel, two small notches up to 1/10 of the drill diameter are formed, which act as lead-in and centering edges.

Find more on our Website: http://bit.ly/2WuoB67For a diameter-length-ratio from 15xD one generally refers to gun drilling. Gun drills are for example

The gun drilling process is a deep hole drilling method. This method uses a long thin cutting tool that creates holes to create high depth-to-diameter ratios. In addition, gun drilling is very effective in diameters ranging from 1 mm to 50 mm. When it comes to gun drilling the head has a unique design that [] Gun Drilling Machine Manufacturers

Deep-hole drilling services consist of 2 processes: BTS drilling and Gundrilling. non-magnetics, inconels, aircraft grade aluminum and titanium.

SOFT ALLOYS Non Ferrous Consult Sterling Gun Drills to verify application requirements. High SFM will cause vibration and/or harmonics with long gun drills. Reduce RPM or ensure adequate supports are in place or use an intermediate length gun drill. Minimum oil/coolant pressure is 35% of the PSI values on page 2. If at minimum, reduce SFM by 35%.

Whether your order is a large or short run, our efficiency allows us to be competitive regardless of order size. PRECISION MACHINING FOR EVERY INDUSTRY. • CNC TURNING, LARGE & SMALL. • LARGE CAPACITY CNC PLANER MILL (x852) • CNC 4 AXIS MILLING. • DEEP GUN DRILLING. • LONG CYLINDRICAL GRINDING UP TO 240". • CNC TURNING CENTER 38

Stegman Tool can hold a tolerance of +/-.0005 straightness per inch with our anti-rotation attachment, which is a tighter tolerance than the industry standard. Materials drilled are carbon steel, stainless steel, Inconel/Nickel based alloys, aluminum, coppers, and many more. [table id=5 responsive=flip /]

5/20 · It is worth noting that the chips produced by the twist drill aluminum and Q235 steel are spiral. The gun drill is a straight edge cutter with no spiral flutes, so the chips it produces are mostly sheet-like. In this way, the chips are short, the chip removal is easy, the knife bar is not wound, and the hole wall of the part is not scratched.

Deep hole drilling RT Gun drilling operations must utilize a pilot hole or guide bushing for successful Aluminum and other non-ferrous metals.

8/22 · I feed a 1.001" gun drill in an aluminum casting at .0045 ipr with no pilot hole. The tip of the drill is supported by a drill bushing in a fixture. I do not drill but about 3" deep though. A gun drill is just required to reach the feature. Not sure if that chip load could be sustained drilling to depth without causing chips to clog.