DeWalt DWE4557 instruction manual Causes and Operator Prevention of Kickback

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Causes and Operator Prevention of Kickback

Kickback is a sudden reaction to a pinched or snagged rotating wheel, backing pad, brush or any other accessory. Pinching or snagging causes rapid stalling of the rotating accessory which in turn causes the uncontrolled power tool to be forced in the direction opposite of the accessory’s rotation at the point of the binding.

For example, if an abrasive wheel is snagged or pinched by the workpiece, the edge of the wheel that is entering into the pinch point can dig into the surface of the material causing the wheel to climb out or kick out. The wheel may either jump toward or away from the operator, depending on direction of the wheel’s movement at the point of pinching. Abrasive wheels may also break under these conditions.

Kickback is the result of tool misuse and/or incorrect operating procedures or conditions and can be avoided by taking proper precautions as given below:

a)Maintain a firm grip on the power tool and position your body and arm to allow you to resist kickback forces. Always use auxiliary handle, if provided, for maximum control over kickback or torque reaction during start up. The operator can control torque reaction or kickback forces, if proper precautions are taken.

b)Never place your hand near the rotating accessory. Accessory may kickback over your hand.

c)Do not position your body in the area where power tool will move if kickback occurs. Kickback will propel the tool in direction opposite to the wheel’s movement at the point of snagging.

d)Use special care when working corners, sharp edges etc. Avoid bouncing and snagging the accessory. Corners, sharp edges or bouncing have a tendency to snag the rotating accessory and cause loss of control or kickback.

e)Do not attach a saw chain woodcarving blade or toothed saw blade. Such blades create frequent kickback and loss of control.

Safety Warnings Specific for Grinding and Abrasive Cutting-Off Operations

a)Use only wheel types that are recommended for your power tool and the specific guard designed for the selected wheel. Wheels for which the power tool was not designed cannot be adequately guarded and are unsafe.

b)The guard must be securely attached to the power tool and positioned for maximum safety, so the least amount of wheel is exposed towards the operator. The guard helps to protect operator from broken wheel fragments and accidental contact with wheel.

c)Wheels must be used only for recommended applications. For example: do not grind with the side of cut-off wheel. Abrasive cut-off wheels are intended for peripheral grinding, side forces applied to these wheels may cause them to shatter.

d)Always use undamaged wheel flanges that are of correct size and shape for your selected wheel. Proper wheel flanges support the wheel thus reducing the possibility of wheel breakage. Flanges for cut-off wheels may be different from grinding wheel flanges.

e)Do not use worn down wheels from larger power tools. Wheel intended for larger power tool is not suitable for the higher speed of a smaller tool and may burst.

Additional Safety Warnings Specific for Abrasive Cutting-Off Operations

a)Do not “jam" the cut-off wheel or apply excessive pressure. Do not attempt to make an excessive depth of cut. Overstressing the wheel increases the loading and susceptibility to twisting or binding of the wheel in the cut and the possibility of kickback or wheel breakage.

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Contents Page Page Seguridad DEL Área DE Trabajo Definiciones Normas De seguridadSeguridad Eléctrica USO Y Mantenimiento DE LA Herramienta Eléctrica Seguridad PersonalInstrucciones de seguridad para todas las operaciones Normas Específicas DE Seguridad AdicionalesMantenimiento Causas del retroceso y su prevención por parte del operador Español Advertencias de seguridad adicionales para esmeriladoras No recomendado EspañolMotor Guarde Estas Instrucciones Para Futuras ConsultasComponentes Fijación del mango lateral Montaje Y AjustesMango Lateral Antivibraciones Rotación de la caja de engranajes FigInstalación de cable con conexión a tierra y enchufe Accesorios y dispositivos para el montaje de los discosDiscos flaps para lijar Protector de montajeMontaje Y Extracción DEL Protector Disco de lija Tuerca de fijación Discos para esmerilar Discos de lijarCepillos de Copa de Piedra Discos de corte Alambre Interruptor Fig FuncionamientoOperación DEL Gatillo Montaje Y Extracción DE Discos CON Cubo Instalación y utilización de los discos deInstalación DE Discos CON Centro Deprimido FIG Botón DEL Seguro DEL EJE FIGAcabado DE Superficies CON Discos DE Lijar FIG Esmerilado DE Bordes CON Discos DE Esmerilar FIGMontaje DE LAS Almohadillas DE Respaldo Para Lijar FIG USO DE Almohadillas DE Respaldo Para Lijar FIG Precauciones que debe tener en cuenta al lijar pinturaRespaldo Luego oprima el botón de bloqueo delSeguridad Ambiental Montaje y uso de cepillos de alambre y discos de alambreLimpieza Y Eliminación Instalación DE LA Guarda DE LAS Piedras DE Copa FIG Instalación y utilización de piedras de copaInstalación DE LA Piedra DE Copa FIG Montaje DEL Protector Cerrado Tipo Montaje y uso de discos de corte Tipo 1Utilización DE UNA Piedra DE Copa FIG TrabajoUSO DE Ruedas DE Corte MantenimientoPara el diámetro del cubo de la caja de Montaje DE LOS Discos DE Corte FIGAccesorios LubricaciónLimpieza ReparacionesPotencia Voltaje 220Frecuencia 50 HzÁrea DE Trabalho Definições diretrizes De segurançaRegras Gerais de Segurança Guarde Estas InstruçõesUSO E Cuidados DA Ferramenta Segurança PessoalTodos os trabalhos de esmerilhamento, f Causas e prevenção por parte doUtilizador do efeito de coice Advertências de segurança comuns aPortuguês Português Interferência do disco ou da escova de arame com a Instruções de segurança adicionais para esmerilhadeirasTensão Comprimento do cabo de extensão Descrição Guarde Todos OS Avisos E Instruções Para Consulta PosteriorSistema DE Expulsão DE Partículas Proteção do Interruptor Eletrônico E-SWITCH ProtectiontmFinalidade Empunhadura ANTI-VIBRAÇÃO Traseira FIGComo instalar a empunhadura lateral Montagem E AjustesEmpunhadura Lateral ANTI-VIBRAÇÃO Como girar a caixa de engrenagens FigInstalação de fio e tomada com conexão à terra Acessórios e dispositivos para a instalação de discosDiscos para lixar Protetor de montagemComo Instalar E Retirar O Protetor Discos de esmerilhamento Discos de lixamento Discos de arame Pedras de esmeril Discos de corte Operação do Gatilho FuncionamentoMontagem E Remoção DE Discos COM Cubos Bloqueio do Veio FIGBloqueio do veio D é fornecido para Montagem DE Discos SEM CuboAcabamento DE Superfícies COM Discos Para Lixar FIG Esmerilhamento DE Beiras COM Discos Para Esmerilhar FIGDe trabalho Instalação DE Almofadas DE Proteção Para Lixamento FIGDisco de lixa deve entrar em contato Como Usar Almofadas DE Proteção Para Lixar FIGLimpeza E Eliminação Precauções a serem tomadas ao lixar superfícies pintadasInstalação e uso de escovas de arame e discos de arame Segurança AmbientalInstalação do Protetor DA Pedra DE Esmeril FIG Como instalar e usar discos de corte tipoComo Instalar Escovas DE Arame Cônicas E Discos DE Arame Como Usar Escovas DE Arame Cônicas E Discos DE Arame FIGFrente para trás para evitar a formação Instalação e utilização de discos de corte Tipo 1Instalação DA Pedra DE Esmerilfig Como Usar UM Disco DE Pedra DE Esmeril FIGComo Instalar Discos DE Corte FIG Como Instalar UM Protetor Fechado TipoReparos ManutençãoLubrificação LimpezaEmpunhadura DA Caixa DE Engrenagens AcessóriosProtegendo o Meio Ambiente Coleta seletiva Empunhadura DE Múltiplos UsosEspecificações Electrical Safety Definitions Safety GuidelinesGeneral Power Tool Safety Warnings Work Area SafetyPower Tool USE and Care Safety Instructions for ALL OperationsService English Causes and Operator Prevention of Kickback Additional Safety Warnings for Grinders Safety Warnings Specific for Sanding OperationsSafety Warnings Specific for Polishing Operations Safety Warnings Specific For Wire Brushing OperationsNot Recommended Cross Sectional Area Range Cord in meters mmDescription Save These Instructions for Future USEDust Ejection System Switch ProtectionIntended USE ANTI-VIBRATION Rear Handle FIGAttaching Side Handle , 2 FIG Assembly and AdjustmentsInstalling Grounded Cord Set and Plug Wheel Mounting Accessories and AttachmentsOperation Switch FigInstalled on the tool Mounting GuardSpindle Lock Button FIG Trigger Operation with LOCK-ON FeatureSanding Flap Discs Trigger OperationSanding disc Clamp nut Grinding Wheels Sanding DiscsWire Wheels Flaring Cup Stones Cutting Wheels Edge Grinding with Grinding Wheels FIG Mounting and Removing Hubbed WheelsMounting NON-HUBBED Wheels Surface Grinding with Grinding Wheels FIGSurface Finishing with Sanding Flap Discs FIG Using Sanding Backing Pads FIGCleaning and Disposal Precautions To Take When Sanding PaintMounting and Using Wire Brushes and Wire Wheels Environmental SafetyMounting Flaring CUP Wheel Guard FIG Mounting and Using Flaring Cup Type 11 WheelInstall the guard as shown in Figure Burning and swirling marks on the workMounting Cutting Wheels FIG Mounting and Using Cutting Type 1 WheelsUsing a Flaring CUP Wheel FIG Mounting Closed Type 1 GuardLubrication MaintenanceCleaning Repairs AccessoriesProtecting the Environment SpecificationsGear Case Grip Copyright 2012, 2013, 2014 D Ewalt MAY14 Part No. N399009

DWE4557 specifications

The DeWalt DWE4557 is a powerful and robust angle grinder designed to deliver high performance and durability for both professional and DIY enthusiasts. This tool is equipped with a 4.5-inch diameter wheel and is renowned for its efficient performance in heavy-duty applications. One of its key features includes a 13-amp motor that provides a remarkable power output of 2,000 watts, ensuring that it can handle tough materials such as metal and masonry with ease.

One of the standout technologies in the DWE4557 is its electronic kickback brake, which engages in the event of a wheel bind-up. This feature helps to minimize the risk of injury and maximizes user safety by bringing the wheel to a stop quickly. The grinder also boasts a no-volt release switch that prevents the tool from starting unexpectedly when reconnected to a power source—a vital safety consideration for frequent users.

The DWE4557 is designed with user comfort in mind. It has an anti-vibration handle that significantly reduces the amount of vibration felt during operation, allowing for prolonged use without causing discomfort to the user’s hands and arms. The handle can be adjusted for optimal control and comfort, accommodating different user preferences.

Additionally, the angle grinder has an integrated safety guard that can be easily adjusted for convenience and operational versatility. The guard protects the user from debris and sparks while grinding or cutting, thereby enhancing safety during use. The DWE4557 also features a spindle lock for easy wheel changes, making it quick and straightforward to switch between different attachments based on the job at hand.

It is worth noting that the DeWalt DWE4557 is designed for durability. It includes a robust, durable construction that can withstand the rigors of heavy usage, ensuring a long lifespan of the tool. The gear case is also designed for longevity, with a high-performance drive system that ensures consistent and reliable operation.

Overall, the DeWalt DWE4557 is a reliable angle grinder that combines power, performance, and safety features in a compact and durable design. Whether for professional applications or personal projects, this tool is well-equipped to deliver outstanding results in a variety of grinding and cutting tasks.
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