110 : Blake Co-Ax center locating indicator spare parts list

page 110

www.longislandindicator.com

Long Island Indicator Service Inc

Precision Tool Repairs, Sales & Spare Parts

	Blake Co-Ax center locating indicator spare parts list

SPI Co-Ax (made in USA) and Blake Co-Ax are identical. Be sure that you have purchased the genuine made-in-USA Co-Ax and not a Chinese imitation (if they cost under $250 they're definitely Chinese). To order new instruments and for information on the Blake Co-Ax indicator, go to page 5. If you'd rather have us service your indicator, please see page 30.

Ordering no.	SPI no.	Accessory and Replacement Feelers	Price USD

851	20-875-1	1.8" long straight Standard feeler: max Ø 4.25"	20.00
852	20-876-9	1.8" long curved Standard feeler: max Ø 4.25"	21.00
851-C2	20-869-4	1.8" long straight carbide feeler: max Ø 4.25"	36.00
852-C2	20-870-2	1.8" long curved carbide feeler: max Ø 4.25"	39.00
MTC72-15		2" long straight feeler with small 1/16" ball	39.00
851-3		3" long straight feeler: max Ø 6"	25.00
852-3		3" long curved feeler: max Ø 6"	29.00
851-4		4" long straight feeler: max Ø 8"	26.00
852-4		4" long curved feeler: max Ø 8"	30.00
851-C4		4" long straight carbide feeler: max Ø 8"	48.00
852-C4		4" long curved carbide feeler: max Ø 8"	50.00
851-5		5" long straight feeler: max Ø 10"	27.00
852-5	20-900-7	5" long curved feeler: max Ø 10"	32.00
851-6		6" long straight feeler: max Ø 12"	29.00
852-6	20-873-6	6" long curved feeler: max Ø 12"	34.00
852-9		9" long straight feeler: max Ø 18" (see notes below)	65.00
853		Center point feeler assembly	37.00
815		Restraining arm	28.00
803		body only	81.00
825		complete movement (parts 29 through 39, not shown)	51.00
826		bezel, new style (see notes below)	13.00
829		dial, inside (small)	12.00
830		dial, outside (large)	12.00
831		hand, large	10.00
832		hand, small	10.00
833		crystal spacing ring	10.00
834		crystal (see note below)	11.00
835		crystal retaining ring	8.00
838		movement screw	7.70
841		shaft (inch 3/8" diameter)	51.00
841-M		shaft (metric 10 mm diameter)	51.00
844		rocker	27.00
846		pin (see repair notes below)	8.00
847.002		spacer .002" thick (goes under #863 and #846)	8.00
847.003		spacer .003" thick (goes under #863 and #846)	8.00
847.004		spacer .004" thick (goes under #863 and #846)	8.00
860	02-281-4	screw (attaches the feeler to the bracket)	8.00
861	02-283-4	feeler bracket (holds the feeler)	31.00
863		screw (attaches the bracket to the rocker)	8.00
864		nut (for screw #863)	8.00
871		wooden box (not shown)	45.00

Feelers

Straight feelers are used for inside diameters and curved feelers are used for outside diameters. They are easy to interchange. The maximum measurable diameter is twice the length of the feeler (with the exception of the standard feeler which will indicate a maximum diameter of 4.25 inches). Thus, a 3" long feeler can indicate a diameter of 6 inches, etc.

The 9" long feeler is suitable for working with tire rims indicating a maximum diameter of 18 inches. The manufacturer does not make this size feeler, so we have had them custom made. The manufacturer advises us that the gage should work correctly even with this size feeler (about 9" long) installed. However, we can not take any responsibility for the function of the indicator when non-standard feelers are used.

Standard ball diameters on these feelers is 1/8" steel. These are also available in carbide for certain lengths. Additionally, we have a 2" long feeler with a small 1/16" diameter steel ball. See the parts list above.

Repair Notes

Parts for the movement are not sold separately. It will be necessary to buy the entire movement #825.

Pin #846 is a press fit into rocker #844. It will slide easily through the shaft. Choose two spacers of an appropriate thickness to eliminate side play. When tapping the pin into place take care not to bend shaft #841. Use some form of support to prevent damage. The straightness of this shaft is the critical element in the Co-Ax indicator's function. Two spacers will also be used under screw #863 and nut #864 to eliminate side play in that location.

The glass crystal #834 is .020" larger in diameter on the new models. If you're trying to fit it into an old model, use a diamond file to modify it. The alternative is to replace the old bezel with a new style bezel so that the crystal fits. Old style crystals are not available.

The new style bezel #826 easily replaces the old style. It will, however, need the new crystal #834 (see note above).

Be aware that cheap Asian imitations also exist. There is no guarantee that these original Blake parts would work on the Chinese indicators.

If you would rather have us repair these co-axial indicators for you, please refer to page 30.

www.longislandindicator.com

Long Island Indicator Service Inc
14 Sarah Drive — Hauppauge NY 11788 — USA