Makita SA4540C - User Manual

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PRODUCT

P 1/ 12

Model No.

Description

CONCEPT AND MAIN APPLICATIONS

SA4540C/ SA4542C, SA5040C/ SA5042C

Angle Sanders 115mm (4-1/2"), 125mm (5")

For Models SA5040C/ SA5042C

Rubber pad 115

Lock nut 14-48

Abrasive disc 125-24, 30, 50, 80, 120

Abrasive disc (Hook and loop type) 125-40, 60, 80, 120, 180

Wire cup brush 90 set

Wheel cover for wire cup brush 90

Dust collecting wheel cover

etc.

For Models SA4540C/ SA4542C

Rubber pad 100

Lock nut 14-48

Abrasive disc 115-24, 30, 50, 80, 120

Abrasive disc (Hook and loop type) 115-40, 60, 80, 120, 180

Wire cup brush 90 set

Wheel cover for wire cup brush 90

Dust collecting wheel cover

etc.

1,400W Angle sander series models, SA4540C, SA4542C, SA5040C and

SA5042C are successor models of 9565CVL, featuring:

•

"Super Joint System II" developed for effective vibration absorption

• Electronic current limiter, speed control and soft start

• Anti-restart function (for models SA4540C, SA5040C only)

• Re-designed durable gear housing

• Ergonomically best possible barrel grip

Specification

Continuous Rating (W)

Voltage (V) Cycle (Hz)

Input Output

840

Max. Output (W)

110

120

220

230

240

6.7

6.4

6.1

50/60

1,400

2,100

1,800

2,000

2,100

Current (A)

840

127 12

50/60

---

2,000

840

*1 with Side grip

Model No.

No load speed: min.

ˉ¹=rpm

Abrasive disc

Pad

Capacity: mm (")

Protection against electric shock

Power supply cord: m (ft)

Weight according to EPTA-Procedure 01/2003*1: kg (")

European countries except UK: 4.0 (13.2),

Brazil, Australia: 2.0 (6.6), Other countries: 2.5 (8.2)

2,000 - 7,800

Double insulation

115 (4-1/2)

Shock absorbing System

Mechanical brake

Super Joint System II

Yes

SA4540C, SA5040C: Yes/ SA4542C, SA5042C: No

Constant speed control

Variable speed control by dial

Soft start

Electronic current limiter

Anti-restart function

Electronic

control

Yes

SA5040C/ SA5042CSA4540C/ SA4542C

125 (5)

105 (4-1/8)

115 (4-1/2)

2.4 (5.2)

Standard equipment

Note: The standard equipment for the tool shown above may vary by country.

Side grip ................................ 1 (normal type or anti-vibration type)

Lock nut wrench .................... 1

Pad 115 .................................. 1 (for SA4540C/ SA4542C)

Pad 125 .................................. 1 (for SA5040C/ SA5042C)

Optional accessories

ECHNICAL INFORMATION

Dimensions: mm (")

Width (W)

Height (H)

Length (L)

105 (4-1/8)

315 (12-3/8)

Model No.

SA4540C

SA4542C

121 (4-3/4)

SA5040C

SA5042C

115 (4-1/2)

Main Page

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The Makita SA4540C/SA4542C and SA5040C/SA5042C are a series of 1,400W angle sanders, designed as successors to the 9565CVL model. These tools are engineered for efficient sanding operations, offering enhanced features for user comfort, control, and durability. The SA4540C and SA4542C models are designed for 115mm (4-1/2") abrasive discs, while the SA5040C and SA5042C models accommodate 125mm (5") abrasive discs.

Function Description

These angle sanders are primarily used for grinding, sanding, and cutting various materials, making them suitable for a wide range of applications in construction, metalworking, and other industries. The powerful 1,400W motor ensures high performance and efficiency in demanding tasks.

Usage Features

The SA4540C/SA4542C and SA5040C/SA5042C series incorporates several advanced features to improve usability and safety:

"Super Joint System II": This proprietary system is developed for effective vibration absorption, significantly reducing user fatigue during prolonged operation and enhancing overall control of the tool.
Electronic Control: The sanders are equipped with electronic current limiter, speed control, and soft start functions.
- Electronic Current Limiter: This feature protects the motor from overload by limiting the current, thereby extending the tool's lifespan.
- Speed Control: Allows the user to adjust the rotational speed to match the specific application and material, providing greater precision and preventing damage to delicate workpieces.
- Soft Start: Ensures a smooth and gradual start-up, minimizing initial torque shock and providing better control from the moment the tool is switched on.
Anti-restart Function: Specifically included in models SA4540C and SA5040C, this safety feature prevents accidental start-up if the tool is plugged in while the switch is in the "on" position, or after a power interruption. This enhances user safety by preventing unexpected operation.
Variable Speed Control by Dial: This allows for precise adjustment of the no-load speed, ranging from 2,000 to 7,800 revolutions per minute, enabling optimal performance across different tasks and materials.
Durable Gear Housing: The re-designed gear housing contributes to the tool's overall durability and longevity, protecting internal components from wear and tear in harsh working environments.
Ergonomic Barrel Grip: The tool features an ergonomically designed barrel grip, which provides a comfortable and secure hold, reducing strain on the user's hand and wrist during operation.
Double Insulation: For enhanced safety, the sanders are double insulated, providing an additional layer of protection against electric shock.
Standard Equipment: Each sander comes with a side grip (normal type or anti-vibration type), a lock nut wrench, and either a 115mm pad (for SA4540C/SA4542C) or a 125mm pad (for SA5040C/SA5042C). The side grip can be adjusted for left or right-handed use, offering flexibility and comfort.

Maintenance Features

The manual provides detailed instructions for repair and lubrication, emphasizing the importance of following the "Instruction manual" or "Safety instructions" for proper maintenance.

Repair Procedures: The manual outlines specific steps for disassembling and assembling various components, including the armature, spiral bevel gear, ball bearings, switch lever, switch block, switch, and brush holder. Specialized tools are listed for each repair task to ensure proper handling and prevent damage. For instance, a gear extractor is used to separate the armature from the gear housing cover, and various removers and pliers are specified for bearings and retaining rings.

Lubrication: Proper lubrication is crucial for the longevity and smooth operation of the sander. The manual specifies the application of Makita grease to designated portions of the tool, such as the gear room within the gear housing, and contact points of the C-type plate, coupling, and spindle. Different types of Makita grease (e.g., SG No. 0 and FA No. 2) are recommended for specific parts, with precise amounts indicated to prevent unusual abrasion and ensure optimal performance.

Component Replacement:

Joint Sleeve: The manual explicitly states that removed joint sleeves should not be re-used due to potential loss of slip torque, and new joint sleeves must be mounted during assembly.
Pin Cap: Similarly, a new pin cap should be used for replacement, and any plastic dust on the shoulder pin must be removed to ensure proper function of the shaft lock mechanism.
Thread Locker: For certain bolted connections, such as the M4x16 Hex socket head bolts, the application of thread locker (e.g., Three bond 1342 or Lock tight 242) is recommended if the unscrewed bolts are re-used, ensuring secure fastening.

Circuit Diagram and Wiring: The manual includes a circuit diagram and wiring instructions, detailing the connection of lead wires, the switch block to the motor housing, and the brush holders. This information is vital for electrical repairs and ensuring correct reassembly of the electrical components. It also notes the presence of a noise suppressor in the switch block for some countries.

Overall, the Makita SA4540C/SA4542C and SA5040C/SA5042C angle sanders are designed to be powerful, user-friendly, and durable tools, with comprehensive maintenance guidelines to support their long-term performance.

Makita SA4540C Specifications

General

Model	SA4540C
Type	Sander
Power Source	Electric
Input Power	450 W
Dust Collection	Yes
Sanding Disc Diameter	115 mm
Abrasive Disc Diameter	4-1/2"
No Load Speed	12000 RPM
Orbits Per Minute (OPM)	24000 OPM