Engineering DataPilot Assemblies

The New Industry StandardThis product may be covered by one or more patents or patent applications.

See http://www.standardlifters.com/patents.html for details. 12/13 - Rev. 9

Engineering Data - Pilot Assemblies - Pg. 2

Things to Consider

Stock Thickness / Pilot Diameter

Below are three main factors that should be considered when choosing a Pilot size/style for your design. We offer different sizes/styles in order to provide the best possible solution based on your part design and tool application.

Ejection Style

Mounting Configuration

OR

Style: Ejector Pins Style: Round Stripper

Style: In Pad - with Fasteners Style: In Window

OR

Stock Thickness in relationship to the Pilot Diameter is important for 2 main reasons.1. To provide enough locating surface area, based on land length and diameter, between the pilot and the stock to effectively locate the stock.2. To provide a robust assembly that reduces the potential of the Pilot assembly being damaged during “common” mis-hits / mis-feeds where the pilot is required to pierce and/or form the stock.

The Ejector Pin style should be the preferred

option whenever possible. It is more robust because the Pilot body is fully supported in the

Pad/Window.

For Thin / Soft Stock - The Round Stripper style will provide a better stripping

condition by providing more contact surface between

the stripper and the stock.

Used when mounting

directly in a pad without a window.

Retained with Fasteners.

Used when a window is mounted

to the pad. Retained by a shoulder on the pilot assembly and a step in the window.

Engineering Data - Pilot Assemblies - Pg. 3

Product Scope / Options / Pricing

StockHeavy Duty Stock Thin / Soft Stock

Up to .075”(1.9mm) - .150”(3.8mm) Thick Stock Up to .040”(1mm) - .080”(2mm) Thick Stock

Ejection Method Ejector Pins Round Stripper

Mount Fasteners - In Pad In Window Fasteners - In Pad In Window

Pictures

Dia. Product # / Price

.375” PA-.375-.075-S-P-F$50

PA-.375-.075-S-P-W$50

PA-.375-.050-S-R-F$50

PA-.375-.050-S-R-W$46

.500” PA-.500-.100-S-P-F $52

PA-.500-.100-S-P-W $52

PA-.500-.075-S-R-F $52

PA-.500-.075-S-R-W $48

.625” PA-.625-.125-S-P-F $56

PA-.625-.125-S-P-W $56

PA-.625-.100-S-R-F $56

PA-.625-.100-S-R-W $52

.750” PA-.750-.150-S-P-F $63

PA-.750-.150-S-P-W $63 N/A

10mm PA-10mm-1.9mm-S-P-F $50

PA-10mm-1.9mm-S-P-W $50

PA-10mm-1.3mm-S-R-F $50

PA-10mm-1.3mm-S-R-W $46

13mm PA-13mm-2.5mm-S-P-F $52

PA-13mm-2.5mm-S-P-W $52

PA-13mm-1.9mm-S-R-F $52

PA-13mm-1.9mm-S-R-W $48

16mm PA-16mm-3.2mm-S-P-F $56

PA-16mm-3.2mm-S-P-W $56

PA-16mm-2.5mm-S-R-F $56

PA-16mm-2.5mm-S-R-W $52

20mm PA-20mm-3.8mm-S-P-F $63

PA-20mm-3.8mm-S-P-W $63 N/A

Product Number StructurePilot

DiameterLocating

LandEjection Force

(Standard)Ejection Style

(Pins or Round)Retention Method

(Fasteners or Window)

PA .500 .100 S P FPA-.500-.100-S-P-F

Engineering Data - Pilot Assemblies - Pg. 4

Pilot Dia.

Stock Thickness Range

Diameter Range that will interfere with Ejectors

when stock is not present

Standard Receiving Hole Diameter

.375”.020” - .031”

.531” - 688”.438” or 11mm

.031”-.075” .531” or 13.5mm

.500”.020”-.050”

.656” - .813”.625” or 16mm

.050”-.100” .844” or 21.5mm

.625”.020”-.063”

.781” - .938”.750” or 19mm

.063”-.125” .938” or 24mm

.750”.020”-.075”

.906” - 1.063”.906” or 23mm

.075”-.150” 1.125” or 28.5mm

10mm0.5mm-0.8mm

13.5mm - 17.5mm.469” or 12mm

0.8mm-1.9mm .531” or 13.5mm

13mm0.5mm-1.3mm

16.5mm - 20.5mm.625” or 16mm

1.3mm-2.5mm .807” or 20.5mm

16mm0.5mm-1.6mm

20mm - 24mm.781” or 20mm

1.6mm-3.2mm .938” or 24mm

20mm0.5mm-1.9mm

24mm - 28mm.938” or 24mm

1.9mm-3.8mm 1.125” or 28mm

Clearance minimizes the forces subjected on the Pilot and tooling during a Mis-hit situation, the hole below the pilot allows the material to extrude, rather than creating a “pinch trim” situation. We recommend that you use our Standard recommended diameters below to keep your design and machining process simple.

Usage Guidelines:Ejector Pin Style for Heavy Duty Stock

Pilot Dia. Max Stock Thickness

.375” .075”

.500” .100”

.625” .125”

.750” .150”

Stock Thickness to Pilot Diameter

“Receiving Hole” Clearance Requirement

Pilot Dia. Max Stock Thickness

10mm 1.9mm13mm 2.5mm16mm 3.2mm20mm 3.8mm

Engineering Data - Pilot Assemblies - Pg. 5

Usage Guidelines:Round Stripper Style for Thin/Soft Stock

Clearance minimizes the forces subjected on the Pilot and tooling during a Mis-hit situation. The hole below the pilot allows the material to extrude, rather than creating a “pinch trim” situation. Due to thin stock, we recommend that the clearance per side is equal to the stock thickness. This allows for adequate clearance during a mis-hit while still supporting the stock during normal running conditions.

Stock Thickness to Pilot Diameter

“Receiving Hole” Clearance Requirement

The Round Stripper Style Pilot Assembly is for use with Thin / Soft

Stock only. Due to its Body not being supported adjacent to the

Pilot “Tip”, it is less robust than the fully supported Ejector Pin Style

Pilot Assembly.

Fully SupportedBody

Clearance for Stripper and Spring

Clearance Hole Diameter Formula:Pilot Diameter + (Stock Thickness x 2)

Testing was done to ensure each pilot diameter could handle the worst case scenario that was

still within our recommendations. This was done using high strength stock at the max

thickness with a mis-hit of a half of a hole, thus subjecting all of the forces against the pilot in

one direction.

Pilot Dia. Max Stock Thickness

.375” .040”

.500” .060”

.625” .080”

Pilot Dia. Max Stock Thickness

10mm 1.0mm13mm 1.5mm16mm 2.0mm

Engineering Data - Pilot Assemblies - Pg. 6

2. Install Window over Pilot Assembly- If window is larger in size,install window overPilot with care as to not damage the stripperor spring

1. Insert Pilot Assembly into Reamed Hole - Ensure the assembly is seated on the shoulder prior to installing the fasteners- If installation requires more than a light press fit, stop installation, remove pilot, and check that the ream is within proper machining tolerances

Pilot Installation InstructionsPad Locating / Fastener Retaining

1. Insert Pilot Assembly into pocket or Reamed Hole - Ensure the assembly is seated on the shoulder prior to installing the fasteners- If installation requires more than a light press fit, stop installation, remove pilot, and check that the pocket/ream is within proper machining tolerances

Window Locating / Window Retaining

2. Install Fastener(s) / Lock Washer(s) / Flange

1. Insert Pilot Assembly into Window- Ensure the assembly is seated on the shoulder prior to installing the window- If installation requires more than a light press fit, stop installation, remove pilot, and check that the bore is within proper machining tolerances

Pad Locating / Window Retaining

2. Install Window in Tool- If window is larger in size,install window with care as to not damage the Spring/Stud that protrudes from the window

*Do Not Use the Fastener to “Pull” the Pilot Down Into the Bore or Ream

Machining Gages AvailableTo ensure your Pilot Locating Bore is machined within proper tolerance, use Go/NoGo Machining Gages available from Standard Lifters. Cost is around $14-$20 per gage, and is an inexpensive investment to ensure your machining department is able to measure and hold proper locating bore tolerances.

Engineering Data - Pilot Assemblies - Pg. 7

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1. Go to www.standardlifters.com 2. Click on the Engineering Data Tab

3. Click on the Cad Library 4. Click on desired CAD Model Type

Either Full Assemblies or Individual Parts

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