23 mm ID Bearings | McMaster-Carr

Ready to mount on your linear motion spline shaft, these bearings come installed in a housing and have grooves that match up with the splines on your shaft. Because they’re splined, they transfer rotational force as they move loads up and down the shaft’s length. A flanged end makes them best for lifting and lowering loads on vertical shafts. All have fixed alignment—use them where shaft misalignment is unlikely.

Ball bearings, also known as ball splines, create less friction than plain bearings, making them smooth and precise even at high speeds. However, they don’t produce as much rotational force. Choose them for robotic systems and other automated applications that require complex, fast movements.

For technical drawings and 3-D models, click on a part number.

Steel Ball Bearings with Steel Housing

Ball Bearing

For Four Splines

								Mounting Holes
For No. of Splines	For Shaft Dia., mm	Overall Lg., mm	Flange OD, mm	Bolt Circle Dia., mm	OD, mm	Max. Torque, in.-lbs.	Max. Temperature, ° F	No. of	Thread Size		Each
Fixed Alignment
4	23	70	60	47	37	1,433	176°	4	M5 × 0.8 mm	00000000	0000000

Steel Spline Shafts

Splined End × Step-Down End

Four Splines

				Step
Dia., mm	Lg., mm	Spline Lg., mm	End Type	Dia., mm	Lg., mm		Each
4 Splines
23	350	200	Splined End × Step-Down End	20	150	00000000	0000000

Metric Press-Fit Drill Bushings with Head

Shown in Countersunk Hole

Shown in Standard Hole

Even under extreme drilling pressure, these metric bushings won't press through your jig plate. A flanged head on the top of the bushing acts as a stop, preventing it from moving as you push down your drill bit, reamer, or other cutting bit. Drill bushings ensure accurate, consistent cuts and drilled holes from one part to the next. They sometimes also work as spacers, shims, and machinery bushings. Made of hardened, ground steel, these bushings hold their shape and resist wear over time. The flanged head protects your jig plate from damage caused by heavy use.

Although it's no longer an active standard, DIN 172 is still a common reference point for making sure parts are compatible with other parts and tools.

These bushings work in both countersunk and standard drill holes. To install, place the bushing inside the hole in your jig. A chamfered edge on the bottom of the bushing helps center the bushing in the hole. Once centered, press the bushing into the hole with a hydraulic or lever press.

For technical drawings and 3-D models, click on a part number.

		Head		Tolerance								Each
OD, mm	Lg., mm	OD, mm	Thick., mm	ID, mm	OD, mm	Lg., mm	Drill Bushing Type	Material	Hardness	Specifications Met		1-5	6-11	12-Up
23 mm ID
35	15	39	5	0.02 to 0.041	0.017 to 0.033	-0.2 to 0.2	H	Steel	Rockwell C61	DIN 172	000000000	000000	000000	000000
35	31	39	5	0.02 to 0.041	0.017 to 0.033	-0.3 to 0.3	H	Steel	Rockwell C61	DIN 172	000000000	00000	00000	00000
35	40	39	5	0.02 to 0.041	0.017 to 0.033	-0.3 to 0.3	H	Steel	Rockwell C61	DIN 172	000000000	00000	00000	00000