1、June 15,2001 1 SUBJECT 7700-2-1 OUTLINE OF INVESTIGATION FOR PORTABLE PNEUMATIC TOOLS; PART 2: PARTICULAR REQUIREMENTS FOR DRILLS AND ROTARY HAMMERS Issue Number: 1 JUNE 15,2001 COPYRIGHT O 2001 UNDERWRITERS LABORATORIES INC. 2 SUBJECT 7700-2-1 JUNE 15,2001 No Text on This Page JUNE 15,2001 SUBJECT
2、7700-2-1 3 CONTENTS FOREWORD . .4 1 Scope . 2 Components . 5 3 Undated References . . 5 Glossary . 6 General Requirements . 7 General Notes on Tests . . 5 . 6 . 6 . .6 . . . . . .6 . .7 . .8 14 Mechanical Strength . 15 Construction 16 Noise Emission . . 17 Resistance to Corrosion . 18 Accessories an
3、d Attachments . 4 SUBJECT 7700-2-1 JUNE 15,2001 FOREWORD A. This Outline of Investigation contains basic requirements for products covered by Underwriters Laboratories Inc. (UL) under its Follow-Up Service for this category within the limitations given below and in the Scope section of this Outline
4、of Investigation. They are subject to revision as further experience and investigation may show is necessary or desirable. B. The observance of these requirements by a manufacturer is one of the conditions of the continued coverage of the manufacturers product. C. A product which complies with the t
5、ext of this Outline of Investigation will not necessarily be judged to comply with the Outline of Investigation if, when examined and tested, it is found to have other features which impair the level of safety contemplated by these requirements. D. A product employing materials or having forms of co
6、nstruction which conflict with specific requirements of the Outline of Investigation cannot be judged to comply with the Outline of Investigation. A product employing materials or having forms of construction not addressed by this Outline of Investigation may be examined and tested according to the
7、intent of the requirements and, if found to meet the intent of this Outline of Investigation, may be judged to comply with the Outline of Investigation. E. UL, in performing its functions in accordance with its objectives, does not assume or undertake to discharge any responsibility of the manufactu
8、rer or any other party. The opinions and findings of UL represent its professional judgement given with due consideration to the necessary limitations of practical operation and state of the art at the time the Outline of Investigation is processed. UL shall not be responsible to anyone for the use
9、of or reliance upon this Outline of Investigation by anyone. UL shall not incur any obligation or liability for damages, including consequential damages, arising out of or in connection with the use, interpretation of, or reliance upon this Outline of Investigation. F. Many tests required by the Out
10、line of Investigations of UL are inherently hazardous and adequate safeguards for personnel and property shall be employed in conducting such tests. JUNE 15,2001 SUBJECT 7700-2-1 5 1 Scope This Section of Part 1 is applicable except as follows: Modify 1. I as follows: The term ”tools” is replaced wi
11、th ”drills, rotary hammers and impact drills.” 2 Components This Section of Part 1 is applicable. 3 Undated References This Section of Part 1 is applicable. 4 Units of Measurement This Section of Part 1 is applicable. 5 Glossary This Section of Part 1 is applicable except as follows: Add definitions
12、: 5.101 DRILL - A tool specifically designed to make holes in various materials such as metal, plastics, wood, and similar materials. 5.102 IMPACT DRILL - A drill specially designed to make holes in concrete, stone and other similar materials. It is similar, in appearance and construction, to a dril
13、l, but has a built-in percussion system that gives an axial percussion movement to the rotating output spindle. It may have a device for rendering the percussion system inoperative, so that it can be used as a conventional drill. The force applied by the operator influences the impact energy An impa
14、ct drill is normally designed to rotate, in a clockwise direction, at one or more speeds. 5.103 ROTARY HAMMER - A hammer designed to make holes in marble, concrete, artificial and natural stone and similar materials. It has a built-in percussion system and the strength of impact of the mechanism is
15、not influenced by the operator and also has the capability of rotational motion. SUBJECT 7700-2-1 JUNE 15,2001 6 6 General Requirements This Section of Part 1 is applicable. 7 General Notes on Tests This Section of Part 1 is applicable. 8 Marking This Section of Part 1 is applicable. 9 Instructions
16、This Section of Part 1 is applicable. 10 Electrical Circuits This Section of Part 1 is applicable. 11 Rotating Output This Section of Part 1 is applicable. 12 Surface Temperatures This Section of Part 1 is applicable. 13 Accessibility of Moving Parts This Section of Part 1 is applicable. 14 Mechanic
17、al Strength This Section of Part 1 is applicable. JUNE 15,2001 SUBJECT 7700-2-1 7 15 Construction This Section of Part 1 is applicable except as follows: Replace 15.7 with the following: 15.7. A lock-on button for the control device on a drill, rotary hammer or impact drill shall be outside the gras
18、ping area or shall be constructed so that it is not likely to be unintentionally locked in the on position by the users hand during intended left- or right-handed operation. Compliance is checked by inspection or by the following test. A lock-on device located in a recess within the grasping area sh
19、all not be actuated by a straight-edge utensil when the utensil is made to pass back and forth across the device in any direction. The straight-edge utensil is to be of any convenient length sufficient to bridge the surface of the lock-on device and any surface adjacent to the lock-on device. Add pa
20、ragraphs: 15.101 A chuck key shall be constructed so that it drops easily out of position when released. A chuck key shall not be fixed to the tool by means of a chain, string, or similar means. Compliance is checked by inspection and by a manual test. The key is to be inserted into the chuck, and w
21、ithout tightening, the tool is to be turned so that the key is facing down. The key shall drop out. 15.102 A drill that is marked for use with drill-borers having a diameter exceeding 16 mm (5/8 in) for drilling steel, or that is fitted with a chuck marked for use with such drill-borers, shall have
22、a side handle, or shall have provision for fixing a side handle, in addition to the normal handle. Compliance is checked by inspection. 16 Noise Emission This Section of Part 1 is applicable. SUBJECT 7700-2-1 JUNE 15,2001 8 17 Resistance to Corrosion This Section of Part 1 is applicable. 18 Accessories and Attachments This Section of Part 1 is applicable.
