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PSG-250M

After several years' development,our products include screws, bolts, nuts and anchors. Over 95% of our products are exported to the overseas market, such as Europe. America and Southeast Asia.

Commodity name： PSG-250M

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Product description

Ltem	Specification		Unit	PSG-250M
Capacity	Overall table working area		mm	460x200
	Cross feed table travel		mm	565
	Longitudinal table travel		mm	250
	Distance spindle center to table		mm	470
	Table load including magnetic chuck		kgs	120
Table & Cross feed	T-slot		mm×N	14×1
	Longitudinal table speed		m/Min	/
	Slide way			Linear guide rail
	F/B Cross feed on hand wheel	lgra	mm	0.02
		lrev	mm	4
	Auto cross feed per stroke		mm	/
	Power cross feed	50HZ	mm	/
		60HZ	mm	/
Grinding wheel	Wheel dimension		mm	ф205×6～20×31.75
	Spindle speed	50HZ	R.P.M	2850
		60HZ	R.P.M	3420
Vertical movement	Vertical on handwheel	lgra	mm	0.01
		lrev	mm	2
	Auto down feed elevation		mm	/
	Power head increment		mm/min	/
Motor	Spindle motor		HXP	2×2
	Power elevation motor		W	/
	Hydraulic motor		HXP	/
	Front and rear motors		W	/
	Dust collection motor		HXP	3/4×2(Optional)
	Coolant motor		HXP	1/8×2
Dimension & Weight	Machine height		mm	1775
	Floor space		mm	2080×1400
	Net weight		kgs	1300
	Gross weight		kgs	1400

The Hirano PSG series manual surface grinders deliver consistent sub-0.002mm grinding precision for tool rooms, mold shops, and small-batch production. Built on a widened, heightened, and thickened cast-iron base, these machines maintain long-term geometric stability even under heavy workloads.

Core Advantages

Precision spindle — Original Taiwan spindle unit paired with a V3-class low-vibration motor keeps runout minimal and surface finish consistent
Built-in linear scale — Standard dual-axis 1-meter linear scale (DRO) enables accurate positioning and repeatable results without guesswork
Rigid machine body — Reinforced overall structure eliminates chatter and ensures stable grinding performance over years of use

Series Comparison

Feature	PSG-618	PSG-450
Table drive	Imported Japanese wire rope (both sides)	Synchronous belt (both sides)
Design focus	Heavy-duty durability	Lightweight & compact
Typical use	High-frequency production, mold polishing	Small parts, tool room, maintenance

Applications

Ideal for precision flat surface grinding of molds, dies, fixtures, gauge blocks, and small metal components. Commonly used in:

Tool & die making
Injection mold polishing
Electronics component finishing
Machine shop maintenance and repair

Technical Highlights

Grinding accuracy: < 0.002mm
Standard equipment: Taiwan spindle unit, V3 low-vibration motor
Measuring system: Dual-axis 1m linear scale (included)
PSG-618 drive: Japanese steel wire rope — built for long service life
PSG-450 drive: Synchronous belt — lighter operation, lower maintenance

Why Hirano?

Hirano manual surface grinders balance precision, durability, and value. Whether you need a reliable workhorse for daily production (PSG-618) or a compact solution for occasional precision work (PSG-450), the PSG series covers both ends of the manual grinding spectrum.

Manual surface grinder is widely used for precision metal processing, providing stable grinding performance, accurate surface finishing, and reliable operation. Suitable for industrial manufacturing, mold processing, and mechanical workshops, it supports efficient machining with durable structure, smooth movement, and easy manual control for various grinding applications.

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