1

KNOW THE CATALOG

Derek EvansTom Puerling

2

Presentations&

Seedbox

Custom Couplings,Assemblies, U-joints

Generate-Only

TechnicalOrientation

CatalogStandards

CouplingSelection

MachinedSprings

Where are we?

Pyramid of Flexure Knowledge

3

Morning Agenda

Standard Coupling Choices

Special Bore Configurations

Afternoon Agenda

Engineering Proposal Form (EPF)

Standard Coupling Identification

4

Please Ask Questions

Morning Goal

By the end of this session…

Series Characteristics

Valid Part Numbers

Catalog Familiarity

5

Why a flexible coupling?

Imperfect shaft alignment

Reduce bearing loads

Lighter duty

Longer life

Better than a rubber hose!

6

Why a Helical coupling?

One piece – no moving parts, no lubrication, improved reliability

Zero Backlash

High-quality

Best engineering staff on the planet!

7

Stepper Motors/Servo Motors

Applications

Ball Screws/Lead Screws/ActuatorsTachometers/Encoders/ResolversPumpsFans

8

Need to connect two shafts…

Applications

9

IndustriesCommercial Data Storage

Robotics for Semi-Conductor Industry

Pick-and-Place Robotics

10

Recreation Agriculture

Automotive Solar

Industries

11

Medical Aerospace

Military

Can you thinkof more?

Industries

12

Standard Couplings

13

What is a Standard Coupling?

In the Helical Products Catalog

W, A, H, DS, MC, PF, X

14

Please remove

the Helical

Products

catalog from

your binder and

turn to Page 9

15

16

W- Series

In The Catalog On Pages 10-11

17

W - Series

Stainless Steel & Aluminum

Metric Fasteners

External Dimensions & Performance in Metric Units

Keyways available (Appendix C) – 40mm OD & 50mm OD

18

19

Building Part Numbers

WAC30-10mm-10mm

W7C30-10mm-10mm

Material:

A : Aluminum, 7075-T6

7 : Stainless Steel, 17-4PH

20

Integral ClampWAC or W7C

Clamps around entire shaft

No need for flats

Will not mar shafts

Put-on / Take-off applications

Reversing applications

21

Used with flatsShorter than clamp modelsMore EconomicalLarger bores without a Clearance Diameter

22

Clearance Diameter

For larger bores, the cap screw is moved away from center and the head protrudes

23

Building Part Numbers

W7C30-10mm-10mm

W730-10mm-10mm

Attachment style:

“C” : Integral Clamp

No “C” : Set Screw

24

WAC25-10-10

Basic Part Number

W : World Series

A : Aluminum

-or- 7 : Stainless Steel

C : Integral Clamp

25 : OD Designator (mm)

Bore sizes: 10mm

NO!!!

25

Bore Designators Appendix (B)

Can be standard or metric or both

Inch : -16-12

Metric : -10mm-8mm

Non-Standard : .222 inch

Not 7/32 = .219

Not 8/32 = .250

.222 = 5.64mm : -5.64mm

26

Bore combination examples

-10mm-10mm

A1 metric, A2 metric

-10mm-12

A1 metric, A2 standard

-12-12

A1 standard, A2 standard

-10-6mm

A1 standard, A2 metric

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Building Part Numbers

W7C30-10mm-10mmW7C30-10-10

-10mm-10mm : Bore Designators

-10-10 : Bore Designators

-10 : Bore Designator

-10 = 10/32 inch = 5/16 inch = .313

28

Questions you may have

So, bores can be metric or standard, either both or mixed?

YES!

Does the catalog show all possible bores?

NO!

My customer has a 9.135mm bore. Can we make this?

Yes, but…

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Basic Part Number

W : World Series

A : Aluminum

-or- 7 : Stainless Steel

C : Integral Clamp

25 : OD Designator (mm)

WAC25-10mm-8mm

30

Basic Part Number

W : World Series

7 : Stainless Steel

-or- A : Aluminum

: Set Screw

20 : OD Designator (mm)

Bore sizes?

W720-8mm-8

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Basic Part Number

W : World Series

7 : Stainless Steel

-or- A : Aluminum

C : Integral Clamp

40 : OD Designator (mm)

Bore and keyway sizes? (Appendix B & C)

W7C40-14mmQ5-12K1

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W-series Notes1. Shaft misalignments:

Angular: 5 degreesParallel Offset: .25mm (.50mm T.I.R.)Axial Motion: ± .25mm

2. Dynamic torque ratings are momentary values. For non-reversing applications, divide by 2. Divide by 4 for reversing applications. Should the torque ratings be marginal for your application, contact us for analysis.

3. Material: 7075-T6 aluminum alloy.Finish: clear anodize.

or Material: 17-4 PH high strength stainless steel.Finish: natural

33

Notes (continued)

4. Manufacturing dimensional tolerances unless otherwise specified are:

fraction ± .5mmx.xx ± .25mm

5. Please refer to page 18 for other available bore dimensions.

6. Inertia is based on smallest standard bore diameter.

7. Keyways available on the 40mm and 50mm OD only.

34

Torque Example

Specs: 10mm shafts, continuous (non-reversing) operating torque of 1.1Nm, aluminum, clamping

What is the complete part number for the smallest W-series coupling that will work?

Answer: WAC25-10mm-10mm

How? 1.1Nm X 2 (service factor) = 2.2Nm(momentary dynamic torque)

35

Torque Example

Specs: 10mm shafts, reversing operating torque of 1.1Nm, aluminum, clamp

What is the complete part number for the smallest W-series coupling that will work?

Answer: WAC30-10mm-10mm

How? 1.1Nm X 4 (service factor) = 4.4Nm MIN (momentary dynamic torque)

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Torque

What if my customer only has a MAX motor rating?

The actual operating torque may be much less.

Try to find a momentary dynamic torque rating at least as high as the MAX motor rating.

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38

39

Questions you may have

What shaft tolerance is recommended with the integral clamp?

+.000/-.001in.

What kind of set screws are used?

Cup point

Can I ask for a different screw (size, material)?

Yes, but….

40

Part prefixes for metric screws

A: ACRM, ARM

H: HCRM, HRM

DS: DSACM

MC: MCACM, MCAM, MC7CM, MC7M

41

Series Available with Metric Screws ONLY

W: WAC, WA, W7C, W7

X: XCA

PF : PFA, PFS

42

Your turn to be the engineer,

Pat Owens!

Specs: Aluminum, 40mm OD, integral clamps, 12mm A1 bore, 10mm A2 bore

ANSWER: WAC40-12mm-10mm

43

Ring…ring…another call,

John Perry

Specs: Stainless, 25mm OD, set screws, bores are 5mm and ¼”

ANSWER: W725-8-5mm

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Let’s take a break...

10 minutes....

45

Performance Comparison

Material Torque TorsionalFlexibility

Cost

AluminumAlloy7075-T6

10 lbin .10 deg/lbin $ 10

StainlessSteel17-4 H900

20 lbin .04 deg/lbin $ 20

StainlessSteel303

10 lbin .04 deg/lbin $ 20

46

Examples of Long Term Sales

4085-8-8General Dynamics/US Army M1 Tank1,000’s per year since ‘79

47

High-Volume Standards

ACR075-8-8

Average 12,000 pieces ordered per year since 2005

48

What is a “Flexure Fact” ?

Tool to expand opportunities

Brief story of actual success

Format

Challenge

Solution

Answer

Picture/Drawing

49

Flexure Facts

Industries:

Industrial and Manufacturing

Aerospace and Aviation

Medical

Commercial

Recreational

Agricultural

Automotive

50

51

80 Flexure Facts

www.heli-cal.comand in your Engineering Seminar binder

52

DS- Series

In The Catalog On Pages 12-13

53

DS Series, Double Start

Aluminum

Low Inertia

High Torsional Stiffness

Integral Clamp Only

Larger Shaft Sizes Than A & H With Relief

54

Part Number Quiz for Rick DeArmond

DSAC125-16-12

DSAC : Basic Model Number

DS : Double Start

A : Aluminum

C : Clamp

125 : OD Designator 1 ¼” (1.250”)

55

MC Series

In The Catalog On Pages 14-15

56

MC Series

Aluminum or Stainless Steel

Motor Coupling series

High Parallel Offset Capacity

Keyways available (Appendix C)

3600RPM

57

Part Number Quiz forDave Wieser

MCAC150-16-12MCAC : Basic Model Number

MC : Motor Coupling

A : Aluminum

C : Clamp

150 : OD Designator 1 ½” (1.50”)

58

Part Number Quizfor Kyle Sitton

MC7CM150-14mmQ4-16K4

MC7 : Stainless Steel

C: Integral C

150: 1 1/2 inch OD Lamp

Bore sizes and keyways? (Appendix B & C)

59

60

A & H - Series

In The Catalog On Pages 16-17

61

A Series

Aluminum

Light-Duty

Non-Magnetic

Most Economical

62

H Series

Stainless Steel

Heavy-Duty

High Torque Capacity

Fatigue-Resistant Material

High Torsional Stiffness

63

Building Part Numbers

ACR112-16-12HCR112-16-12

Material:

A : Aluminum

H : Stainless Steel

64

Building Part Numbers

ACR112-16-12AR112-16-12

Attachment style:

ACR : Integral Clamp

AR : Set Screw

65

Building Part Numbers

ACR112-16-12HCR112-16-12

Internal configuration:

R : Relief

No “R” : no relief

66

*dark areas show the amount of relief within the coupling interior

With Relief* / ACR & AR

Equal Diameter Shafts Unequal Diameter Shafts

Without Relief / Restricted Bore Configuration

Unequal Diameter Shafts Equal Diameter Shafts

Bore Configuration Styles (A)

67

ACR112-16-12

Part Number Quiz

Steven Hernandez

ACR : Basic Model Number

A : Aluminum

C : Integral Clamp

R : Relief

112 : OD Designator 1 1/8” (1.125”)

68

AC100-16-12

Part Number Quizfor Josep Pena

AC : Basic Model Number

A : Aluminum

C : Integral Clamp

No “R”: No Relief

100 : OD Designator

69

Standard OD Designatorsfor A and H series

037 : 3/8 inch coupling OD

050 : 1/2 inch coupling OD

062 : 5/8 inch coupling OD

075 : 3/4 inch coupling OD

087: 7/8 inch coupling OD

100 : 1 inch coupling OD

112 : 1 1/8 inch coupling OD

125 : 1 1/4 inch coupling OD

Is that all!?

70

Another question…

I noticed the A-series note #4 says “Metric fasteners available on request.”

Yes, the A, H, DS and MC series can have metric screws.

71

Recap - A Series

Aluminum

Light Duty

Non-Magnetic

Clamp or Set-Screw

Relief

72

Recap - H Series

Stainless Steel

Heavy Duty

High Fatigue Resistance

Clamp or Set-Screw

Relief

73

Part Number QuizforBob Kirkland

HCR075-8-4

H : Stainless SteelC : ClampR : Relief075: 3/4 inch OD-8-4 : 1/4 inch Major Bore

1/8 inch Minor Bore

74

Part Number Quiz

for David Jadrych

HR100-12-8mmH : Stainless Steel Set

R : Relief Screw

100: 1 inch OD

-12-8mm : 3/8 inch Major Bore

8mm Minor Bore

75

Part Number Quizfor Spencer Abramson

ACR100-6mm-5mmA : Aluminum

C : Clamp

R : Relief

100: 1 inch OD

-6mm-5mm : 6mm Major Bore

5mm Minor Bore

76

Which parts are stainless and which are aluminum?

Stainless is slightly magnetic and has a sheen.

Anodized aluminum will be non-magnetic and have a grey finish.

Material Identification

77

Special Bore Configurations

In The Catalog On Pages 18-19

78

79

80

.37in

Step

BCS 8

Quiz

MC7100-16-12A1 bore : Relief or Step?.........................

What is the depth?...................................

What is the BCS? (Appendix A)…..

81

PowerFlex (PF - Series)

82

X- Series

In The Catalog On Page 21

83

X – Series :

Cross Slot Couplings

84

X - Series

Low-Cost Alternative to Bellows

Very High Torsional Stiffness

Aluminum Only

Integral Clamp Only

Always has Relief

85

U-joints

Attachments

Springs

Idea Stimulators

Catalog Page 22-24

86

CatalogPage 25

Engineering Proposal Form

87

CatalogPage 26

Top Industries Served

88

Keyword Review

NO MOVING PARTSGreater reliability and no lubrication required

ZERO BACKLASHCritical for feedback applications

SPECIAL MATERIALSOnly Helical works with 17-4

Engineering Proposal Form (EPF)OD, length bores, attachment, torque misalignments, qty’s

89

One last question…

90

After Lunch

Engineering Proposal Form (EPF)

Coupling Identification

91

Be Back Here at 1:00