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RA - 151E

90

°

 Angle Spindle

Thank you for purchasing 90

°

Angle Spindle " RA - 151E ". This Spindle is designed for grinding, small diameter 

drilling and milling, etc. The E3000 CONTROLLER, Brushless Motor or Air Motor and Air Line Kit are rquired to 
drive this Spindle. Read this and all the associated component Operation Manuals carefully before use. Always 
keep this Operation Manual in a place where a user can referred to for reference at any time.

OPERATION MANUAL

OM-K0422E 001

1

. CAUTIONS FOR HANDLING AND OPERATION

 Read these warnings and cautions carefully and only use in the manner intended.

 These warnings and cautions are intended to avoid potential hazards that could result in personal injury to the 

operator or damage to the device. These are classified as follows in accordance with the seriousness of the risk.

Class

Degree of Risk

  

WARNING

A safety hazard could result in bodily injury or damage to the device if the 
safety instructions are not properly followed.

  

CAUTION

A hazard that could result in light or moderate bodily injury or damage 
to the device if the safety instructions are not followed.

WARNING

This Spindle is not a hand tool. It is designed to be used on CNC machines or special purpose 
machines.

Do not touch the cutting tool while it is running. It is very dangerous.

Wear safety glasses, dust mask, and use a protective cover around the Spindle whenever the 
Spindle is rotating.

Never connect, disconnect or touch the Power Cord Plug or Motor Cord Plug with wet hands. 
This may cause an electric shock.

Never operate or handle the motor and Spindle until you have thoroughly read the Operation 
Manuals and safe operation has been confirmed.
1)  To prevent injuries / damages, check the motor, Spindle and cutting tool for proper 

installation, before operating the motor and Spindle.

2)  Before disconnecting the motor and Spindle, always turn the control power off and turn the 

compressed air supply to the CONTROLLER off. Then it is safe to remove the motor and 
Spindle.

When installing a Spindle to a fixed base, make sure the fixed base is grounded in order to 
avoid the risk of an electric shock.

When installing a tool, tighten the collet chuck correctly and check again the collet chuck 
before use. Do not over-tighten the collet chuck. This may cause damage to the Spindle.

Do not use bent, broken, chipped, out of round or sub-standard tools, as this may cause them 
to shatter or explode. Tools with fractures or a bent shank will cause injury to the operator. 
When using a new tool, rotate it in a low speed and increase speed gradually for safety.

Do not exceed the maximum recommended allowable tool speed. For your safety, use speeds 
below the maximum allowable speed.

Do not apply excessive force. This may cause tool slippage, tool damage, injury to the operator 
or loss of concentricity and precision.

Summary of Contents for RA-151E

Page 1: ...glasses dust mask and use a protective cover around the Spindle whenever the Spindle is rotating Never connect disconnect or touch the Power Cord Plug or Motor Cord Plug with wet hands This may cause an electric shock Never operate or handle the motor and Spindle until you have thoroughly read the Operation Manuals and safe operation has been confirmed 1 To prevent injuries damages check the motor ...

Page 2: ...Do not exceed the capabilities of the Spindle or tools During supply of coolant spray do not stop the supply air pressure If stop the supply air pressure entering coolant spray to internal Air Turbine Spindle by lost air purge This may occur damage to the Air Turbine Spindle Carefully direct coolant spray to the tool Do not spray directly on the Spindle body Stop working immediately when abnormal ...

Page 3: ...he Spindle Align the thread on the front end of the motor and the rear of the Spindle and turn the Spindle clockwise If the drive shaft of the motor does not engage properly to the drive dog on the Spindle it may only turn aprroximately two threads before stopping DO NOT FORCE THEM TOGETHER Loosen the Spindle from the motor rotate the Spindle shaft by hand then re try The drive shaft and the drive...

Page 4: ...ndle is tight before using 4 Fig 3 8 5 Spindle Shaft 7 5 5 Loosen Tighten Wrench 5 5mm Tool Collet Chuck Wrench 8mm Set the provided 8mm wrench on the Spindle Place the provided 5 5mm wrench on the chuck and turn it counter clockwise to loosen the collet chuck and remove the tool Clean the collet chuck then insert the new tool and tighten the collet chuck by turning clockwise Do not overtighten Fi...

Page 5: ... Fig 9 CLAMPING AREA Grip Ring GR 30 Sold Separately Fig 6 When installing a Spindle use a Grip Ring GR 30 sold separately Fig 6 recommended If the Grip Ring GR 30 sold separately cannot be used due to the restriction of dimension and space install as shown in below Do not allow set screws to come directly in contact with the Spindle body as shown in Fig 9 as this will result in damage to the Spin...

Page 6: ...ype Holder so that the inside diameter of the Split Type Holder is ȭ30 with its tolerance range from 0 01mm to 0 015mm and its roundness and cylindricity of less than 5μm 7 When inserting the Spindle loosen the Fastening Bolt and twist the Screw for Removal and widen the Slit Area Front View Fastening Bolt Slit Side View Fastening Bolt Screw for Removal Spacer Fastening Bolt Spacer Screw for Remov...

Page 7: ...the spindle and injury to the operator Keep the cutting tool shank and collet chuck clean If contaminants are left in the collet chuck or chuck nut excessive run out will cause damage to the cutting tool and or Spindle Do not strike or disassemble the Spindle Please minimize the tool overhang amount to maintaining high accuracy 13mm is the maximum amount of overhang to maintain high accuracy and s...

Page 8: ...nd clean the collet chuck Reinstall the collet chuck The collet chuck is worn Replace the collet chuck High run out The tool is bent Change the tool Collet chuck is not correctly installed Secure the collet chuck correctly The collet chuck is worn Replace the collet chuck Inside of the Spindle is worn Replace the Spindle shaft Return to NAKANISHI dealer service Contaminants inside the collet chuck...

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