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REAMING | ALVAN® Reaming Systems by S.C.A.M.I.®

Setup Information Replaceable Head Style

XTP TAP TAS HPU APX 4TX REV OPN SSD ACP BTA WHL CRT ALV BRN THM

Fixed Head Style

Expanding Heads Adjustment When the size reaches its lower tolerance, the head can be adjusted to compensate for wear to the cutting edges. This operation can be repeated several times until the surface finish of the hole deteriorates to an unacceptable level. Adjustment Procedure Slowly turn the right-hand threaded screw clockwise while checking the diameter setting of the reamer with a micrometer. When the required diameter is achieved, the tool is ready for use. Recommended Tightening Torque for Fixed Head Reamer (7400 / 7700) Imperial Metric D 1 Range (inch) Torque (in-lbs) D 1 Range (mm) Torque (N-m) 0.465 - 0.575 22.1 11.80 - 14.60 2.5 0.575 - 0.693 33.6 14.61 - 17.60 3.5 0.693 - 0.850 44.3 17.61 - 21.60 5.0 0.851 - 1.047 62.0 21.61 - 26.60 7.0 1.048 - 1.283 88.5 26.61 - 32.60 10.0 1.284 - 1.598 106.2 32.61 - 40.60 12.0 1.599 - 1.992 141.6 40.61 - 50.60 16.0 1.993 - 2.386 177.0 50.61 - 60.60 20.0

H

Tolerance: Fixed reamers are manufactured at 2/3 of the tolerance

Expandable Head Style

H

Tolerance: Expandable reamers are manufactured to the middle of the tolerance

Replaceable Head Reamer Assembly Fixed and Expandable Styles

Step 1: Insert the replaceable reamer head into the mandrel.

Step 2: Insert the screw into the reamer head opening to secure it to the mandrel.

Step 3: Tighten the screw.

NOTE: We recommend lubricating the thread and the conical surface of contact between the reamer head and the screw with antifriction Molycote® grease.

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