Engineering Toolkit — Hamar Automation

DOC. FCL-002

REV. 1.0 / 2026

1Select Units

2Scenario

3Parameters

mMass

aAcceleration

ft/s²

μFriction Coef.

—

gGravity

ft/s²

4Free Body Diagram

FIG. 01 HORIZONTAL

5Results

This tool is for general reference and does not replace thorough engineering evaluations for applications.

Net Applied Force Required

—

POUNDS-FORCE

WWeight

—lbf

NNormal Force

—lbf

fFriction Force

—lbf

F_g∥Gravity Component

—lbf

EQUATION › F = ma + μ·mg · horizontal motion

DOC. SGC-001

REV. 1.1 / 2026

1Units

2Material

MMaterial Name — TYPE TO SEARCH

—

ρBulk Density AUTO

lb/ft³

hColumn Height Factor AUTO

μMaterial Friction AUTO

start

GGate Guides

Select a material to fill μ and h from the reference table.

3Gate Geometry

WGate Width

LGate Length

tBlade Thickness — steel plate; sets the blade weight W3

θAngle from Vertical

0^°

From vertical

φGate Angle

0^°

From horizontal

4Closing Through Material Column?

5Free Body Diagram

FIG. 01 · GATE SECTION CLOSING UNDER LOAD

6Results

This tool is for general reference and does not replace thorough engineering evaluations for applications.

Required Actuator Force · Breakaway

—

POUNDS-FORCE

AGate Area

—ft²

PMaterial Pressure on Blade

—psf

F_NNormal Load on Guides

—lbf

F_RRunning Force (avg)

—lbf

METHOD › initializing…

DOC. LDC-001

REV. 1.0 / 2026

1Blade Configuration

2Application

3Damper Dimensions

ADamper Width / blade length

BOpening Height

NNumber of Blades

dLever Arm Length

RContact Pressure Rate — blade-to-blade sealing

lbs/in

4Application Notes

› Engineering reference

Effects of high gas temperatures are not included in formulas.
For isolation / shut-off dampers, select actuator according to breakaway torque or force.
For control dampers, select actuator according to running torque or force.
Control torque is based on 3600 ft/min gas velocity.

5Damper Schematic

FIG. 01 · DAMPER ELEVATION OPPOSED · SHUT-OFF

6Results

This tool is for general reference and does not replace thorough engineering evaluations for applications.

Required Torque

—

FT-LBS

Actuator Force

—

LBS

CHalf Blade Width

—in

τTorque (in-lbs)

—in-lbs

ADamper Area

—ft²

FORMULA › initializing…

DOC. DGC-001

REV. 1.0 / 2026

1Operating Condition

2Gate Geometry

CWidth of Gate

GLength of Gate

W₃Total Blade Weight

lbs

Ø'Max Angular Travel — from vertical centerline

30^°

From vertical

3Material & Mechanical

W₁Material Density

lb/ft³

dLever Arm Length

aAcceleration Factor — Table 3, ≤ 3.5 m/s

—

4Application Notes

› Engineering reference

Select actuator according to breakaway force requirements.
If gate is non-symmetrical, use the larger of the two angles for Ø'.
To move the gate back toward the centerline, actuator torque must exceed gate torque.
Acceleration factor based on velocity of 3.5 m/s or less.

5Gate Schematic

FIG. 01 · DIVERTER ELEVATION MOVING STREAM · Ø'=30°

6Results

This tool is for general reference and does not replace thorough engineering evaluations for applications.

Running Force · Rf

—

LBS

Breakaway Force · BAf

—

LBS

AProjected Length

—ft

BProjected Height

—ft

cgCenter of Gravity

—ft

W₂Material Load

—lbs

W₃Blade Weight

—lbs

τGate Torque

—ft-lbs

FORMULAS › initializing…

DOC. TLF-001

REV. 1.0 / 2026

1Solve For

2Units

3Input Value

τApplied Torque

ft-lbs

4Geometry

rLever Arm Length

θForce Angle — from perpendicular

0^°

From perpendicular (0° = optimal)

ηMechanical Efficiency

5Application Notes

› Engineering reference

F = τ / r when force is applied perpendicular to the lever arm.
Off-axis force reduces effective torque by cos(θ).
Add a 1.2–1.5× safety factor when sizing actuators.
Efficiency accounts for pivot friction and linkage losses.

6Schematic

FIG. 01 · LEVER ARM TORQUE → FORCE

7Results

This tool is for general reference and does not replace thorough engineering evaluations for applications.

Linear Force at Lever End

—

POUNDS-FORCE

τ⊥Effective Torque

—ft-lbs

F⊥Perpendicular Force

—lbf

cos θAngle Factor

—

FORMULA › initializing…

DOC. DCY-001

REV. 1.0 / 2026

1Motion Profile

SStroke Length

vActuator Speed

Enter the stroke and pick a speed to fill the extend and retract times, or type the times yourself.

t_extExtend Time

sec

t_retRetract Time

sec

t_d1Dwell @ Extended

sec

t_d2Dwell @ Retracted

sec

2Frequency

NCycles per Hour — 1 cycle = open + close · overrides dwell

cyc/hr

η_rRated Duty Cycle — HMA009: 25% (15 min on / 45 min off)

25^%

Manufacturer rating

3Application Notes

› Duty cycle reference

Duty cycle = motion time ÷ (motion + dwell) × 100%.
Rated values: 25% = standard, 50% = high-cycle, 100% = continuous.
Exceeding rating causes motor thermal trips and reduces life.
Includes safety derate of 20% on demand vs. rating.

4Cycle Timeline

FIG. 01 · ONE CYCLE CYCLE: 56s

5Results

This tool is for general reference and does not replace thorough engineering evaluations for applications.

Actual Duty Cycle Demand

—

PERCENT MOTION TIME

t_mMotion / Cycle

—sec

t_cTotal Cycle

—sec

NCycles / Hour

—cyc/hr

ΔHeadroom

—% pts

η_maxMax Allowable

—cyc/hr

τMin Dwell Needed

—sec

FORMULA › initializing…

DOC. SLC-001

REV. 1.0 / 2026

1Solve For

2Units

3Lever Geometry

rLever Arm Length — pivot to actuator pin

θ₀Starting Angle — from neutral / vertical

0^°

Initial position

4Motion

αRequired Travel Angle

90^°

Total rotation

5Application Notes

› Engineering reference

Stroke is the chord traced by the pin as the lever rotates.
S = 2·r·sin(α/2) when symmetric about the perpendicular.
Off-axis pin paths add a non-linear correction — for non-symmetric mounts, use the start/end angle math.
Add 10–15% to the required stroke for end-of-travel overrun and tolerance.

6Schematic

FIG. 01 · ROTARY → LINEAR ANGLE → STROKE

7Results

This tool is for general reference and does not replace thorough engineering evaluations for applications.

Required Linear Stroke

—

INCHES

SStroke (chord)

—in

αTravel Angle

—°

L_arcArc Length

—in

+15%Stroke with Margin

—in

θ₁End Angle

—°

S/rStroke Ratio

—

FORMULA › initializing…