Head Press-Fit Oil-Groove Bushings – Type 1 (H, HM)

Drill Bushings

Product Information

Head Press-Fit Oil-Groove Bushings – Type 1 (H, HM)

Type 1 – With Oil Hole

Oil grooves are specially designed coolant passageways in a bushing's ID wall. Oil grooves are available on almost any bushing type, including press fit, head press fit, and renewable. Use when you need complete drill lubrication and cooling, such as when drilling hardened steel, or when bushings are used as bearings.

The Type 1 oil groove shown here has a single radial hole in the bushing wall to allow coolant to flow from a manifold passage to the bushing's internal oil grooves. The bushing must be correctly oriented during installation so that the radial hole lines up with the manifold passage.

Application Information

Oil Groove Styles

Type 1 Oil-Groove Bushings (with Oil Hole) are available in eight styles, to suit different operating conditions, lubrication requirements, and individual preferences:

AC Helix

AA Helix, Open Bottom

AB Helix, Open Both Ends

AL Straight

AR Loop

AU Double Loop

AN Figure 8

AX Double Figure 8

Ordering example:

H-48-16-.5000-AC H bushing with AC-style oil groove

Optional Wiper

To guard against dirt and chips entering the bushing ID (usually from the drill-entrance end), order oil-groove bushings with a wiper end. Order style AAA for headless bushings, style ABB or ACC for head-type bushings.

H-48-16-.5000-AC-ACC

Sizes & Technical Data

Oil grooves are available for bushings with ID sizes from 3/8" to 8", and lengths from 1/2" to 8" (oil grooves stop 1/8" short of each end). Oil grooves are 1/16" wide x 1/32" deep. Oil holes are 1/4" diameter.