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Precision light duty live center DM311/312/313/314/315/316/317

Core product advantages

1. Narrow shell lightweighting

Smaller outer diameter, less interference, no tool rubbing during processing of slender shafts and small parts, suitable for small CNC lathes and instrument lathes.

2. High precision and low bounce

A complete set of precision needle roller+deep groove ball composite bearings, with a standard radial runout of ≤ 0.005mm, and high-precision models up to 0.002mm, specifically designed for high gloss precision vehicles.

3. High speed adaptation

Lubricating grease seals low friction, with a conventional speed of 4000-6000r/min, and a small MT1/MT2 that can reach up to 8000 rpm.

4. Fully enclosed double-layer waterproof and dustproof

Double oil seal, cutting fluid and iron chips are not easy to invade the bearing, factory long-lasting grease, no need to inject oil during maintenance.

5. Top wear-resistant quenching

Whole 40Cr alloy steel quenched, top 60 ° standard centering cone HRC55-60; Optional hard alloy top tip, doubling the wear life.

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		PRECISION LIGHT-LIVE CENTER
Order No.	MS.NO.	L	D	L1	d	D1	Max Load	Max Speed	Accuracy
		(mm)	(mm)	(mm)	(mm)	(mm)	(kg)	(rpm)	(mm)
DM311	MS1	115	34	20.3	18	12.065	320	5000	0.005
DM312	MS2	129.6	45	28.6	25	17.780	400	5000	0.006
DM313	MS3	161.7	52	32.5	28	23.825	800	4500	0.006
DM314	MS4	191.7	60	36.5	32	31.267	1250	3500	0.006
DM315	MS5	244.5	80	50.8	45	44.399	1500	3000	0.006
DM316	MS6	350.5	130	74.8	75	63.348	1800	2500	0.006
DM317	MS7	423.5	130	74.8	75	83.061	2200	2000	0.006

Structure and process characteristics

1. Lightweight and compact shell

Narrow outer diameter body, minimal interference, suitable for precision machining of slender shafts and small precision parts, without rubbing against the knife.

2. Precision bearing assembly

Deep groove ball+thrust needle roller composite bearing, smooth rotation, low vibration, ensuring high speed accuracy and stability.

3. High hardness and wear-resistant top

Top 60 ° standard centering cone, quenched and ground, center hole wear-resistant, long-term processing without deformation.

4. Fully enclosed and maintenance free lubrication

Factory long-lasting grease seal, no need for frequent oiling during normal use, dustproof and waterproof.

5. Overall precision grinding

The taper handle, shell, and tip are all finely ground, and the taper fits the lathe tailstock without any gaps.

Applicable Scenarios

1. Equipment matching: Instrument lathe, small ordinary lathe, CNC small lathe (tailstock MT1 taper hole)

2. Processing workpieces: slender shafts, small shafts, copper aluminum precision small parts, hardware micro parts, mold ejector pins, clock accessories

3. Processing technology: outer circle precision machining, semi precision machining, high-speed high gloss machining, processes with high requirements for roundness and roughness

4. Working condition limitations: only light load, high speed; Not suitable for heavy-duty forgings, large cutting allowances, and rough turning

Precautions for use

1. Only suitable for MT Morse tailstock, clean the taper handle before installation to avoid excessive jumping;

2. The single cutting load should not be overloaded, otherwise the bearing is prone to heating and the accuracy will rapidly deteriorate;

3. Regularly check the oil seal during long-term high-speed processing, and do not let the coolant rush directly into the bearing gap for a long time;

4. Store for rust prevention, with the top cone surface to avoid collision and damage to the centering accuracy.

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