Head Press-Fit Oil-Groove Bushings – Type 3 (H, HM)

Drill Bushings

Product Information

Type 3 – Without Oil Feed

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 3 oil groove shown here has no external feed from a manifold passage to the bushing's internal oil grooves, so all coolant must enter at the ID entrance end. This type is also commonly used as a bearing bushing, packed with oil or grease.

Application Information

Oil Groove Styles

Type 3 Oil-Groove Bushings (without Oil Feed) are available in nine styles, to suit different operating conditions, lubrication requirements, and individual preferences:

AF Helix

AD Helix, Open Bottom

AE Helix, Open Both Ends

AK Straight

AT Loop

AW Double Loop

AQ Figure 8

AZ Double Figure 8

AM Helix with ID Groove

Ordering example:

H-48-16-.5000-AF H bushing with AF-style oil groove (1/2" ID)

Optional Wiper

Diagram showcasing the application of Head Press Fit Oil Groove Bushings Type 3 H Hm

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-AF-ABB

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.

Material

MATERIAL	HEAT TREAT	FINISH	DFARS	RoHS
1144 Stressproof Steel	heat treated to achieve Rc 62-64 ID hardness	-	✔	✔

Click here for detailed material and finish specifications.

California residents click here for Prop 65 information.

Other materials are available by special order