A-A-51198 Press, Arbor, Mechanical, Hand Operated, Compound Leverage (S/S By A-A-59174)This description covers bench or pedestal mounted hand operated mechanical arbor pressed of the compound leverage type, which are used to force arbors into and out of holes or to assemble and disassemble parts.

Pages 1 - 2 - 3 - 4 - 5

A-A-51198

3. Ram and ram operating mechanism. The ram shall be of the rack and pinion type. A means shall be provided for engaging or disengaging the leverage mechanism for single leverage or compound leverage. The leverage ratio shall be of the manufacturer’s standard offered to the commercial market for the size specified.

4. Radius of work. The radius of work is defined as the distance from the center of the ram to the fra~. Unless otherwise specified (see ordering data] the radius of work for the press to be furnished shall be selected from table I. The tolerance of the radius of work shall be ± 0.5 inch.

TABLE I. Radius of work.

NOTE: Largest diameter of work is 2 times the radius. The radius of work designation is for use in developing the CID based part identification number only (see NOTES, page 4).

5. Vertical capacity. The vertical capacity is defined as the distance when measured from top of table surface to ram (ram up). The vertical capacity for the press to be furnished shall be as specified and selected from table II. The tolerance of the vertical capacity shall be ± 1 inch.

TABLE II. Vertical capacity.

NOTE: The vertical capacity designation is for use in developing the CID based part identification number only (see NOTES, page 4).

Metric products. Products manufactured to metric dimensions will be considered on an equal basis with those manufactured using inch-pound units, provided they fall within specified tolerances using conversion tables contained in the latest revision of FED-STD-376, and all other requirements of this commercial item description are met.