Molex RHT-4753 User manual

RHT-4753 Hand Crimp Tool

Doc No. 64003-7100 Release Date: 04-20-06 UNCONTROLLED

COPY Page 1 of 7

Revision: A Revision Date: 04-20-06

Hand Crimp Tool

Operating Instruction and Specifications Sheet

Part No. 64003-7100

Eng. No. RHT-4753

(Replaces 19284-0023)

FEATURES

A full cycle ratcheting hand tool ensures complete crimps

Long handles for comfortable crimping with reduced crimping force

A precision user-friendly terminal locator wire stop holds terminals in the proper crimping

position

Insulation crimp adjustment allows a precise insulation crimp.

SCOPE

VibraKrimpFemale Non-Insulated Quick Disconnects, 24-26 AWG

Testing

Mechanical

The tensile test or pull test is a means of evaluating the mechanical properties of the

crimped connections. The following charts show the UL specifications for various wire

sizes. The tensile strength is shown in pounds and indicates the minimum acceptable force

to break or separate the terminal from the conductor.

Wire Size

(AWG)

*UL - 310

*UL –310 –Quick Disconnects

The following is a partial list of the product part numbers and their specifications that this tool

is designed to run. We will be adding to this list and an up to date copy is available on

www.molex.com.

Wire Size: 24-26 AWG 0.20-0.12mm²

Terminal No.

Terminal Eng No. (REF)

Wire Strip Length

Insul. Dia. Max.

In.

19018-0044

M-4172

.172

4.37

.095

2.41

19018-0045

M-4172-032

.172

4.37

.095

2.41

19018-0019

M-4179

.172

4.37

.095

2.41

19018-0020

M-4179-032

.172

4.37

.095

2.41

RHT-4753 Hand Crimp Tool

Doc No. 64003-7100 Release Date: 04-20-06 UNCONTROLLED

COPY Page 2 of 7

Revision: A Revision Date: 04-20-06

OPERATION

Open the tool by first closing the jaws sufficiently for the

ratchet mechanism to release.

Crimping Terminals

1. There are 2 Tab Locator Blades supplied with the tool.

One is for .187 and .250 Tabs; the other is for .205 Tabs

and .110 Tabs. Make sure the proper blade is installed

on the top of the locator and the other is stored on the

bottom of the locator.

2. Push the terminal onto the tab locator all the way to the stop in the nest. The barrel of the

terminal should be up. See Figure 1.

3. Partially close the tool to hold the terminal in place. See Figure 2.

4. Insert the properly stripped wire into the terminal barrel. See Figure 2 and 3. Cycle the

tool.

Note: The tamper proof ratchet action will not release the tool until it has been fully

closed.

5. Remove the crimp and inspect for proper crimp location, and check for insulation closure.

Molex offers a Crimp Inspection Handbook for closed barrel industrial product. See our

website or contact your sales engineer.

6. If the insulation part of the crimp needs to be adjusted, first loosen the M4 screw on the

bottom tool jaw, then insert a 3/32 hex wrench (supplied) into the bottom of the lower die.

See Figure 4. A clockwise (CW) rotation decreases insulation crimp while a counter-

clockwise (CCW) rotation increases insulation crimp. After adjusting retighten the M4

screw.

LOCATOR

JAWS

OPEN

TAB

LOCATOR

Figure 1

TERMINA

Figure 2

TERMINAL

WIRE

Figure 3

2ND TAB

LOCATOR

WIRE

TERMINA

BARREL

INSULATIO

PUNCH

CONDUCTOR

ANVIL

TERMINA

LOCATO

CONDUCTO

PUNCH

INSULATION

ANVIL

1ST TAB

LOCATOR

RHT-4753 Hand Crimp Tool

Doc No. 64003-7100 Release Date: 04-20-06 UNCONTROLLED

COPY Page 3 of 7

Revision: A Revision Date: 04-20-06

Maintenance

It is recommended that each operator of

the tool be made aware of, and

responsible for, the following

maintenance steps:

1. Remove dust, moisture and other

contaminants with a clean brush, or

soft, lint-free cloth.

2. Do not use any abrasive materials

that could damage the tool.

3. Make certain all pin, pivot points and

bearing surfaces are protected with a thin coat of high quality machine oil. Do not oil

excessively. The 64003-7100 (RHT-4753) was engineered for durability, but like any fine

piece of equipment it needs cleaning and lubrication for a maximum service life of trouble-

free crimping. A light oil such as 30 weight automotive oil used at the oil points shown in

Figure 4, every 5,000 crimps or 3 months will significantly enhance the tool life and ensure

a stable calibration.

4. When tool is not in use, keep the handles closed to prevent objects from becoming lodged

in the crimping dies, and store the tool in a clean, dry area.

Miscrimps or Jams

Should this tool ever become stuck or jammed in a partially closed position, Do Not force the

handles open or closed. The tool will open easily by pressing the ratchet release lever. See

Figure 5.

How To Adjust Tool Preload (See

Figure 5)

Over the life of the tool, it may be

necessary to adjust tool handle preload

force. Listed below are the steps

required to adjust the crimping force of

the hand tool to obtain proper crimp

conditions:

1. Remove the screw and plastic cover

washer. Note the setting wheel

position.

2. Lift the setting wheel off the axle.

Turn the eccentric axle with a

screwdriver.

3. Turning the eccentric axle counter-clockwise will increase handle force.

4. Replace the setting wheel to the axle, aligning the nearest notch in the setting wheel to the

dowel pin.

5. Replace the plastic cover washer and screw.

Figure 5

PRELOAD

ADJUSTMENT

LOCKING

SCREW

1.00

PRELOAD

TEST

POINT

PRELOAD

TEST

POINT

RATCHET

RELEASE

LEVER

PUSH UP

Figure 4

LUBRICATION POINTS

(BOTH SIDES) LIGHT

OIL

(EVERY 3 MONTHS

OR 5,000 CRIMPS)

3/32” HEX

WRENCH

LOOSEN

M4 SCREW

RHT-4753 Hand Crimp Tool

Doc No. 64003-7100 Release Date: 04-20-06 UNCONTROLLED

COPY Page 4 of 7

Revision: A Revision Date: 04-20-06

6. Check the crimp specifications after tool crimp force is adjusted.

RHT-4753 Hand Crimp Tool

Doc No. 64003-7100 Release Date: 04-20-06 UNCONTROLLED

COPY Page 5 of 7

Revision: A Revision Date: 04-20-06

Tool Calibration

A Certificate of Calibration (see last page) was

supplied with the tool. To recalibrate this tool, pin

gauge measurements should be taken in each

conductor nest and compared to this chart. The tool

should be lubricated prior to recalibration to ensure

consistent measurements. Handle preload is factory

set to 25-45 LBS. See How to Adjust Tool Preload

(See Figure 5) to recalibrate.

Nest Color Code

Wire Range

“X” Dimension Conductor Crimp

Crimp Inspection Marking

AWG

mm²

Mean

No Go

Red

26-24

0.20-0.12

.042

.039

.050

N/A

CAUTION: Repetitive use of this tool should be avoided.

Warranty

This tool is for electrical terminal crimping purposes only. This tool is made of the best quality

materials. All vital components are long-life tested. All tools are warranted to be free of

manufacturing defects for a period of 30 days. Should such a defect occur, we will repair or

exchange the tool free of charge. This repair or exchange will not be applicable to altered,

misused or damaged tools. This tool is designed for hand use only. Any clamping, fixturing,

or use of handle extensions voids this warranty.

Hand held crimping tools are intended for low volume, prototyping, or repair requirements

only.

CAUTION: Molex crimp specifications are valid only when used with Molex terminals,

applicators and tooling.

PIN GAUGE IN

CONDUCTOR

CRIMP

“ Confining ”

Crimp

RHT-4753 Hand Crimp Tool

Doc No. 64003-7100 Release Date: 04-20-06 UNCONTROLLED

COPY Page 6 of 7

Revision: A Revision Date: 04-20-06

Figure 6

M4 X 25 LG

PAN HEAD

SCREW

FOR SPRING

ACCESS

SWING

OPEN COVER

SCREW AND

PLASTIC

COVER FOR

HANDTOOL

PRELOAD

ADJUSTMENT

RATCHET

RELEASE

LEVER

M4 X 12LG

PAN HEAD

SCREW

M4 LOCKNUT W/

HEX NYLON

INSERT

M4 FLAT

WASHER

REPAIR KIT. ALL PARTS

REQUIRED FOR

REPAIR. (ONLY MAIN SPRING

SHOWN)

(2)

PARTS LIST

Item

Order No

Description

Quantity

64003-7100

Hand Crimp Tool

(Fig. 6)

64000-0076

Repair Kit (Springs, Pins and E-Rings)

63810-0000

Handle

64003-1175

Locator Assembly

64003-7170

Tooling Kit

Tooling Kit Only

64003-7102

Conductor Punch

64003-7101

Conductor Anvil

64003-7104

Insulation Punch

64003-7103

Insulation Anvil

N/A

4 mm Dia. by 5.0 mm Lg.Roll Pins

2**

N/A

#10-32 by 5/16” Lg. Cup Pt. Set Screw

1**

** The following purchased parts are available from an Industrial supply company such as MSC

(1-800-645-7270).

RHT-4753 Hand Crimp Tool

Doc No. 64003-7100 Release Date: 04-20-06 UNCONTROLLED

COPY Page 7 of 7

Revision: A Revision Date: 04-20-06

Certificate of Calibration

Tool Order Number __________________

Tool Eng. Number ___________________

Tool Revision ___________________

Serial Number ___________________

Date of Manufacture__________________

Handle Load Range at 1 inch from the Tips =______________

Actual =_____________

Pin Gauge of Conductor Nest/Nests or Slug height if the nest is the “F” Crimp style.

Range Conductor Nest # 1 = ____________-- Actual = ______________

Technician______________

Date of Calibration ______________

Calibration should be done every 5,000 cycles or 3 months.

Tools should be lubricated during this operation.

Americas Headquarters

Lisle, Illinois 60532 U.S.A.

1-800-78MOLEX

amerinf[email protected]

Far East North Headquarters

Yamato, Kanagawa, Japan

81-462-65-2324

[email protected]

Far East South Headquarters

Jurong, Singapore

65-6-268-6868

fesinfo@molex.com

European Headquarters

Munich, Germany

49-89-413092-0

[email protected]

Corporate Headquarters

2222 Wellington Ct.

Lisle, IL 60532 U.S.A.

630-969-4550

Fax: 630-969-1352

Visit our Web site at http://www.molex.com

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