Manuals / Ingersoll-Rand / Power Tools / Grinder

Ingersoll-Rand 7870-F-( ), 7871-F-( ), 7872-F, 7873-F manual Motor Section, Disassembly, Assembly

Models: 7873-F 7872-F 7870-F-( ) 7871-F-( )

1 12
Download 12 pages 34.6 Kb
Page 8
Image 8

MOTOR SECTION

DISASSEMBLY

Remove motor assembly from housing as outlined on page 6. Remove retaining nut (33694). Grasp cylinder in one hand and tap threaded end of rotor with a soft face hammer; motor will come apart.

ASSEMBLY

NOTE: Pack bearings with ARO 33153 grease and coat i.d. of cyl- inder with ARO 29665 spindle oil upon assembly.

Assemble two bearings (39624) into end plate (37254) with the sides of the bearings having the least clearance between the in- ner and outer races placed together (see figure below). NOTE: Press on outer race of bearings. Assemble bearing (Y65-15) to end plate (37291), pressing on outer race of bearing. Assemble

end plate (37291) to rotor, pressing on inner race of bearing. As- semble cylinder (36772) over rotor, aligning air inlets of cylinder and end plate and roll pin (Y176-22) with hole in end plate. As- semble blades (41520) to rotor slots -straight side out. Assemble spacer (37290) and end plate (37254) to rotor, pressing on inner race of bearing. Assemble nut (33694) to end plate (37291) and tighten to 9 - 12 ft Ibs.

Be sure rotor does not bind (if rotor binds, tap threaded end lightly with a soft face hammer to loosen). Place head in a suitable hold- ing device with the motor end upright and remove motor housing from head. Place motor assembly on head, aligning roll pin (Y176-22) with .125” diameter blind hole in head. Slip motor housing over motor and tighten securely to head. Assemble lock nut (37253) and Collet assembly to tool.

3/8-24 THREA

TROLL PIN Yl78-22~

37245-l

-BLADE (6141520 /

TROLL PIN Yl76-

EARING Y65-15

END PLATE 37254

SPACER 37290

LASSEMEi..E BEARINGS WITH SIDES HAVING

 

LEAST CLEARANCE BETWEEN IMUER AND

 

I\_CUTER RACES TOGETqR

 

-\

318 -24 THREAD

i!%i%tiEL (NON -EU MODELS) 49999 LABEL (-EU MODELS)

COLLET 41750-( ) (SEE TABLE, PAGE 4) A

/-

OCKNUT 37253

COLLET NUT 41751 A

:

\kND PLATE 37291

-t-INCLUDED WITH CYLINDER 36772 $X TORQUE TO 9-12 FT LBS

I

A COLLET BODY 41752

HOUSING (SEE TABLE, PAGE 4)

A INCLUDED IN 41753-( ) COLLET ASSEMBLY (SEE TABLE, PAGE 4)

8

Page 7 Page 9
Page 8
Image 8
Ingersoll-Rand 7870-F-( ), 7871-F-( ), 7872-F, 7873-F manual Motor Section, Disassembly, Assembly
Page 7 Page 9

7873-F, 7872-F, 7870-F-( ), 7871-F-( ) specifications

Ingersoll-Rand is recognized for its innovative and reliable products in the field of industrial equipment, particularly in the area of rotary compressors and pneumatic tools. Among their notable offerings are the 7871-F, 7870-F, 7872-F, and 7873-F impact wrenches, which are designed to meet the rigorous demands of various professionals.

The Ingersoll-Rand 7871-F-( ), 7870-F-( ), 7872-F, and 7873-F series are characterized by their lightweight design, combined with robust construction that ensures durability. This series of impact wrenches is specifically engineered for high performance and offers an excellent balance of torque and speed, making them suitable for a wide range of applications in automotive, construction, and industrial settings.

One of the main features of these wrenches is their powerful motor, which provides a high torque output, essential for demanding tasks such as lug nut removal and heavy-duty fastening. The tools are equipped with advanced impact mechanism technology, which enhances their efficiency and allows for an optimal power-to-weight ratio. Additionally, the user-friendly controls and ergonomically designed grips ensure maximum comfort during prolonged use.

The 7870-F and 7871-F-( ) models, in particular, boast an adjustable power regulator that allows users to select the optimal torque for different applications. This level of customization is crucial in allowing technicians to work with precision, thereby reducing the risk of damage to fasteners or workpieces. The 7872-F and 7873-F models, on the other hand, focus on features like a higher free speed and extended service intervals, making them ideal for professionals who need reliable tools without frequent maintenance.

All models in this series also showcase Ingersoll-Rand's commitment to technological advancement, incorporating features such as anti-vibration technology that minimizes user fatigue and contributes to better handling. Furthermore, their motors are designed to be energy-efficient, which aligns with modern environmental standards, making them an eco-friendly choice in the industry.

In summary, the Ingersoll-Rand 7871-F-( ), 7870-F-( ), 7872-F, and 7873-F impact wrenches epitomize reliability, performance, and innovation. With powerful motors, user-centric designs, and advanced features, these tools are not only built to last but also to enhance the efficiency of every job they’re used for. Whether for automotive repair or heavy machinery assembly, these impact wrenches stand out as top choices in the competitive market of pneumatic tools.