Items

Specifications

Condition & Remarks

4-1

Configuration

As specified in outline drawing

Outline drawing No:4SH2-07WA.

4-2

Appearance

There shall be no evidence of mechanical damage and shall not have inadequate corrosion, etc.

Visual examination: Inspection carried out on samples.

4-3

Shaft end play

0.05 ~ 0.2mm

4-4

Weight of motor

1.24g approx.

Body + Vibration weight: 0.73+0.51

4-5

Holding strength of vibration weight

49N (5kgf)

Items

Specifications

Condition & Remarks

5-1

Rated speed

9,500±2000rpm

At rated voltage and rated load (vibration weight).

5-2

Rated current

80mA max

5-3

Stall current

110mA max

At rated voltage.

5-4

Starting voltage

0.9V DC max

At rated load (vibration weight) any position of rotor.

5-5

Insulation resistance

1MΩ min

At DC 100V between the lead wires and motor body.

5-6

Terminal resistance

13Ω approx.

At 20°C.

5-7

Mechanical noise

50db (A) max

6-7

Heat stock test

Period: 32 cycles

Exposed at ordinary temperature and ordinary humidity for 24 hours before measurement.

After the test motors shall be approved as specified in item 7-2.

6-8

Sulfur gas

Temperature:    100°C

Time:               48hrs

Environment:     Sulfur gas

No corrosion on the brush and the commutator.

6-9

Salt spray test

Temperature:    35°C

Time:               48hrs

Environment:     5% salt spray

No any sign of corrosion.

6-10

Las Vegas test

Temperature:    60°C

Time:              48hrs

Humidity:         <20% RH

Test mode:       8 secs on (C.W.)

                      52 secs off

After the test motors shall be approved as specified in item 7-2.

Items

Requirements

7-1

Table A

1) Rated speed:                         Initial data -30% min./ +60% max.

2) Rated current:                        Initial data ±30% max

3) Insulation resistance:            1MΩ min

4) Starting voltage:                    1.1V DC max

5) Wave of current:                    No blot wave.

7-2

Table B

1) Rated speed:                        Initial data -30% min./ +60% max.

2) Rated current:                      Initial data ±30% max

3) Starting voltage:                  1.1V DC max

8.  Caution and Matters

8-1 Warnings: In a motor near the end its life, or under breakdown conditions, short circuits can develop between commutator segments. Uncontrolled voltage may then leak into the power source circuit. Motors may overheat or fail if run continuously with its rotor locked condition or under excessive loads.

8-2 Destructive atmospheres: Do not use and store the motor in the corrosive gas atmosphere (H²S, SO², NO², Cl², etc.), or substances that can emit toxic gases, such as organic silicon, cyanide, formalin, or phenol compounds. The motor may get serious damages.

8-3 Condensation: Condensation on the electrical circuits can destroy the motor or control circuits. Monitor the environment and undertake measures to prevent condensation, such as installing condensation sensors to cut power when necessary.

8-4 Be aware of the following factors and perform necessary tests to check a motor’s ability to adopt with your mechanism and applications: Motor life, electric noise, mechanical noise, vibration, static-electrical noise resistance, power-source noise resistance, drift of rpm, electrical resonance between control circuit and motor, mechanical resonance between subassembly and motor malfunction due to motor noise, electrical magnetic interference, malfunction due to magnetic flux leakage, destruction due to lightning-related power surge, grounding.

8-5 Some particular plastic materials can crack and fail after exposure to motor bearing oil. Perform test the motor in/on the subassembly to check the influence of the oiled plastic parts.

8-6 Avoid connecting a serial resistor to the motor if at all possible, as this can negatively affect reliability. If this is unavoidable, keep resistance as low as possible and test thoroughly for reliability before using.

8-7 When testing for UL, CSA or other safely standards, apply for approval for the entire subassembly.

8-8 Do not store motors under conditions of extreme temperatures or high humidity, or for longer than six months even room conditions. When removing out of packaging after storage, take precautions to prevent condensation.

8-9 Connections: Complete soldering operations within three seconds to prevent damage to leads and terminals. Make sure that the soldering tip does not exceed 350°C. Be gentle with terminals; dents or pressure on them can lock up the motor.

8-10 Please consults us in advance when design considerations call for forcefully stalling the motor using a short circuit at the terminal or reverse voltage. Such operations can shorten product life.