BS 1660-4:1989
Current
The latest, up-to-date edition.
Machine tapers Specification for spindle noses and tool shanks with self-release 7/24 tapers
Hardcopy , PDF
English
31-05-1989
Important note : Users cannot be edited or removed once added to your Multi user PDF.
National foreword
Committees responsible
Specification
1 Scope
2 Normative references
3 Interchangeability
4 Tapers for spindle noses
5 Tapers for tool shanks
6 Tool shank collars
Dimensions in millimetres of 7/24 tapers and equipment for manual changing. Specifies external diameter and position of front face of the collar with respect to the taper in the case of attachment by the front face.
| Committee |
MTE/1
|
| DevelopmentNote |
Supersedes BS 1660-4(1988), BS 1660-8(1988), 86/78124 DC and 87/77517 DC. Also numbered as ISO 297. (06/2005)
|
| DocumentType |
Standard
|
| Pages |
14
|
| PublisherName |
British Standards Institution
|
| Status |
Current
|
| Supersedes |
This International Standard specifies the dimensions, in millimetres1), of 7/24 tapers for spindle noses and tool shanks and equipment for manual changing. It also specifies the external diameters of the collars for these tool shanks and equipment, and the positioning of the front face of the collar with respect to the taper in the case of attachment by the front face.
NOTE 1 The collars have two seatings on the periphery into which the two driving tenons on the machine spindle are fitted and are intended for the transmission of the spindle rotational movement to the tool or equipment.
NOTE 2 Shank attachment can be carried out either by conventional rear clamping, using a clamping fastener screwed on the rear side of the shank, or by front clamping of the collar using a locking device mounted on the machine spindle and applying the tool or equipment on to the spindle. Only in the latter case is it necessary for the positioning of the front face of the collar with respect to the taper gauge plane having the basic diameter D1 to be accurately specified.
This type of taper is designed for various types of machine tool spindle noses as well as for the corresponding tool shanks and equipment.
The dimensions for tool shank tapers automatic changers are specified in ISO 7388-1.
1) The inch values will be determined after acceptance of the metric values.
| BS 4500-5:1988 | ISO limits and fits Specification for system of cone tolerances for conical workpieces from <i>C</i> = 1:3 to 1:500 and lengths from 6 mm to 630 mm |
| BS 6607-1:1985 | Tool shanks with 7/24 taper for automatic tool changers Specification for shanks Nos. 40, 45, and 50 |
Access your standards online with a subscription
Features
-
Simple online access to standards, technical information and regulations.
-
Critical updates of standards and customisable alerts and notifications.
-
Multi-user online standards collection: secure, flexible and cost effective.