GOST 12214-66. Machine tool fixtures. Bushings with collar for locators and locating pins. Design

GOST 12214-66

Group G27

State Standard of the Union of Soviet Socialist Republics

Machine tool fixtures

BUSHINGS WITH COLLAR FOR LOCATORS AND LOCATING PINS

Design

Holding devices. Bead bushes for indices and locating pins. Design

Effective date 1967-07-01

INFORMATIONAL DATA

1. DEVELOPED AND SUBMITTED BY the Ministry of Heavy, Power, and Transport Machine Building of the USSR

Ministry of Machine Tool and Tool-Making Industry of the USSR

DEVELOPERS

V.V. Andreev; V.N. Dzegilenok, Candidate of Engineering Sciences; V.A. Petrova; K.I. Sokolsky; A.Z. Staroselsky (project lead); A.V. Khrenova; V.M. Sharkov

2. APPROVED AND PUT INTO EFFECT by Resolution of the Committee for Standards, Weights, and Measuring Instruments under the Council of Ministers of the USSR dated 10.08.66 No. 937

3. Review date - 1993. Review frequency - 5 years

4. SUPERSEDES MN 381-60

5. REFERENCE REGULATORY AND TECHNICAL DOCUMENTS

Designation of the referenced regulatory document	Clause number
GOST 9.306-85	9
GOST 1435-90	2
GOST 4543-71	2
GOST 8820-69	7
GOST 24643-81	5; 6

6. REISSUE (July 1992) WITH AMENDMENTS No. 1, 2, approved in June 1980, March 1988 (IUS 9-80, 6-88)

7. Reviewed in 1988. Validity period restriction removed (Resolution of the USSR State Committee for Standards dated 17.03.88 No. 586)

8. The design and dimensions of bushings with collar for locators and locating pins shall comply with the drawing and the table.

Drawing. Design and dimensions of bushings with collar for locators and locating pins

Dimensions in mm

Bushing designations	Application	H7									Weight, kg
7030-0121		2.5	4	6	-	9	1.6	-	0.2	0.2	0.001
0122		4.0	6	8	8	11		1.2			0.002
0123		6.0	8	10	10	13	2	1.5	0.6	0.6	0.004
0124		8.0	10	12	12	15					0.006
0125		10.0	12	16	16	20	3				0.013
0126		12.0	14	18	18	22					0.014
0127		16.0		22	22	26					0.024
0128			18								0.029
0129		20.0	16	26	26	30	4				0.033
0130			20					2			0.043
0131		25.0		32	32	36			1.0	1.0	0.056
0132			28								0.076
0133		32.0		40	40	44	5				0.110
0134			32					3			0.139
0135		36.0		45	45	50			1.6	1.6	0.158
0136			40								0.194
0137		40.0	36	50	50	55					0.216
0138			45								0.266
0139		50.0		63	63	68		5			0.389
7030-0140			55								0.480

Example of a code designation for a bushing with collar for locators and locating pins with diameter mm, mm:

Bushing 7030-0121 GOST 12214-66

(Amended edition, Amendment No. 1, 2).

2. Material for diameter up to 20 mm - steel grade U8A per GOST 1435*. Substitution with other steel grades having mechanical properties not lower than those of steel grade U8A is permitted.

---

• GOST 1435-99 is in effect. - Note by “KODEKS”.

Material for diameter over 20 mm - steel grade 20Kh per GOST 4543. Substitution with other steel grades having mechanical properties not lower than those of steel grade 20Kh is permitted.

3. Hardness - 56…61 HRC. Bushings made of steel grade 20Kh shall be case-hardened h 0.8…1.2 mm.

4. Unspecified dimension tolerances: h14, .

5. Radial runout tolerance of surface B relative to the axis of surface A - per accuracy grade 4 of GOST 24643.

6. Face runout tolerance of surface C relative to the axis of surface B - per accuracy grade 5 of GOST 24643.

3-6. (Amended edition, Amendment No. 2).

7. Grinding wheel runout grooves - per GOST 8820.

8. (Cancelled, Amendment No. 1).

9. Coating - Chem. Oxid. prm. (coating designation per GOST 9.306).

(Amended edition, Amendment No. 1).

10. Mark a lot of parts of one size on the container or packaging, indicating the designation.

(Amended version, Amendment No. 2).

11. An example of application of the bushing with collar for locators and locating pins is given in the appendix.

(Added additionally, Amendment No. 2).

Appendix

For reference

EXAMPLE OF APPLICATION OF THE BUSHING WITH COLLAR FOR LOCATORS

AND LOCATING PINS