Model Identification, Operation | Ingersoll-Rand 8475-A1, 8478-A1

MODEL IDENTIFICATION

The grinder models listed in the model identification table above are furnished with a collet as standard equipment and are intended for use with mounted wheels and shall not be used with other type grinding wheels. Other size collet inserts or other collet assemblies listed on page 10 can be furnished with the above listed models.

OPERATION

Safe and efficient operation of your ARO grinder can best be attained by observing proper operating, inspection and maintenance proce- dures. Allow only competent and qualified people to operate grinder and subject each grinder to a regular inspection and maintenance procedure. The qualified grinder operator must be carefully instructed in the safe operation and use of the grinder, including a study of the manufacturer’s literature. The grinder operator should have a good attitude regarding safety.

Operator Safety Equipment. The grinder operator shall wear safe- ty goggles or face shield at all times the grinder is turned on. Other protective clothing shall be worn if necessary for spark deflection. Respirators shall be used in poorly ventilated areas. Adjacent per- sonnel shall be protected from grinding sparks and wheel frag- ments by protective barriers.

Starting and Stopping. Before starting a grinder, the operator shall make sure that no one is in the unguarded plane of wheel rotation. Upon mounting a new wheel, grinder shall be run at operating speed with the safety guard in place or in a protected enclosure for at least one minute before applying the wheel to the work. Check speed and balance of wheel.

Before a grinder is put down, the throttle shall be released and the wheel shall come to a stop. Tool rests, hangers or balancers are recommended.

Use only wheels with adequate speed ratings. The maximum op- erating speed marked on the wheel, blotters or packaging, shall equal or exceed the rated speed stamped on the grinder.

At each wheel change, Aro recommends the free speed be checked by competent authorized personnel, using a good reli- able tachometer, to assure that the maximum tool speed is lower than manufacturers rated speed for the wheel to be used. A speed check shall never be made with grinding wheel on the grinder.

Grinders shall not be operated at a speed exceeding its rated speed.

If a wire brush should ever be used with this tool; insure the speed rating of the brush is greater than the speed of the tool the brush is to be used with and insure the brush conforms to applicable safety standards. Be certain the brush is compatible with mounting of the tool. Always use a wheel guard.

MOUNTING INSTRUCTIONS FOR MOUNTED WHEELS

The collet shall be checked to assure it to be in good condition and properly affixed to the grinder spindle.

The mandrel shall be inserted to the full depth of the gripping jaws of the Collet. At least 1/2 the mandrel length shall be inserted into the Collet.

The maximum safe operating speed for mounted wheels shall be determined by the following: 1.) Shape and size of the mounted wheel, 2.) Size of mandrel and 3.) Overhang of mandrel. In no case shall the maximum safe operating speed recommended by the wheel manufacturer be exceeded.

WARNING: Work pressure, if excessive, can be the cause of trouble and a source of danger, thru bending or fracture of the mandrel. Pressure between the wheel and the work should never be so heavy that springing of the mandrel will

result.

MANDREL OVERHANG - DIMENSION “O”

FIGURE 1

IMPORTANT NOTICE: Increasing the overhang of the mandrel will reduce the maximum wheel size that can be safely used with the speed of the tool (dimension “O”,figure 1). Also, the length and diameter of mandrel combined with the size and shape of the wheel are determining factors which must beconsidered when selecting a mounted wheel that will be compatible with the rated free speed of the tool. It is recommended the “Tablesof Maximum Operating Speeds for Mounted Wheels” of the American National Standard publication B7.1-1978 previously mentioned or other reliable source, be consulted to determine the safe operating speed of a particular size and shape of wheel combined with the size and overhang of mandrel.

8477-A, 8478-A1, 8477-A1, 8475-A-( ), 8478-A specifications

Ingersoll-Rand is a renowned brand in the manufacturing of high-quality air compressors, tools, and related equipment. Among its extensive range of products, the models 8476-A, 8476-A1, 8475-A1, 8478-A, and 8475-A-( ) stand out for their performance and reliability. These models are designed for industrial applications, providing solutions for a variety of tasks in construction, automotive, and manufacturing industries.

One of the key features of these models is their robust construction. Built with durable materials, they can withstand demanding conditions and are engineered for longevity. Their design incorporates advanced technology that enhances their performance while reducing maintenance needs. This reliability is crucial for businesses that depend on uninterrupted operations.

The 8476-A and 8476-A1 models are recognized for their high-efficiency air delivery systems, allowing for optimal airflow and minimizing energy consumption. This not only lowers operational costs but also aligns with the growing demand for energy-efficient machinery in industrial settings. Similarly, the 8475-A1 and 8478-A models are equipped with features that enable them to deliver consistent air pressure, which is essential for tools that require a steady supply of compressed air.

In terms of control technology, these compressors feature smart systems that optimize performance based on real-time conditions. This allows users to achieve the best results while extending the equipment's lifecycle. Additionally, the noise-reduction technology implemented in these models means they operate quietly, making them suitable for both indoor and outdoor applications.

With their versatile design, these compressors can be used in a range of settings. The models incorporate user-friendly controls that simplify operation, making them accessible to technicians of all skill levels. They are also equipped with a variety of output options to accommodate different tools and equipment, enhancing their applicability in various tasks.

Performance characteristics such as high PSI ratings and CFM outputs distinguish these models in the market. The 8475-A-( ) model, in particular, is notable for its ability to tackle the most challenging tasks, combining power and efficiency seamlessly.

In conclusion, Ingersoll-Rand’s 8476-A, 8476-A1, 8475-A1, 8478-A, and 8475-A-( ) models are designed to meet the rigorous demands of industrial applications. With their advanced features, durability, and efficiency, they provide reliable solutions that enhance productivity and reduce operational costs. For professionals seeking quality and performance, these models are exceptional choices that continue to uphold the brand's legacy of excellence.