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PSG-450M

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-450M

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Product description

Item	Specification		Unit	PSG-450M
Capacity	Longitudinal table travel		mm	400 x 150
	Cross feed table travel		mm	460
	Distance spindle center to table		mm	180
	Distance spindle center to table		mm	400
	Table load including magnetic chuck		KG	50
Table & Cross feed	T-slot		mm×N	17x1
	Longitudinal table speed		m/min	/
	Slide way		/	（1V1falt)
	Cross feed on hand wheel	1 gra.	mm	0.02
		1rev.		5
	Auto cross feed per stroke		mm	/
	Power cross feed	50HZ	mm	/
		60HZ		/
	A few axis nc		unit	/
Grinding wheel	Wheel dimension		mm	φ180×6～20×φ31.75
	Spindle speed	50HZ	R.P.M	2850
		60HZ		3600
Vertical movement	Vertical on handwheel	1 gra.	mm	0.005
		1rev.		1
	Auto down feed elevation		mm	/
	Power head increment		mm/min	/
Motor	Spindle motor		HXP	1.5
	Power elevation motor		HXP	/
	Hydraulic motor		HXP	/
	Cross feed motor		HXP	/
	Dust collection motor		/	0.37
	Dust collection motor		W	0.4
Dimension & Weight	Machine height		mm	2000
	Floor space		mm	1800×1350
	Net weight		KG	910
	Gross weight		KG	1000

1. Product Overview: Hand-Operated Surface Grinder Lineup

Our hand-operated surface grinders (618 / 450 series) are engineered for stable performance, smooth operation, and lightweight handling. Built with a reinforced, widened, and thickened machine frame, these grinders deliver consistent reliability and precise results for small-to-medium workshop grinding tasks.

Key common features across all models include:

V3 low-vibration original Taiwanese spindle unit for quiet, stable operation
Standard two-axis linear scale with digital readout for precise positioning
Grinding accuracy controlled to <0.002mm for high-precision finishing
Ergonomic design for smooth, fatigue-free manual operation

2.Main Components

1. Precision Ball Screw Assembly

Every grinder is equipped with P3-grade high-precision ball screws for

exceptional motion control. With a low friction coefficient of 0.002–0.005 and over 90% transmission efficiency, these screws minimize heat buildup, reduce wear, and eliminate backlash. Adjustable preload ensures consistent positioning accuracy, converting rotary motion into smooth linear feed to deliver the micron-level precision required for critical grinding operations.

2. Heavy-Duty Spindle Performance

Engineered for industrial-grade durability, each spindle is fitted with Japanese NSK CP4 precision angular contact ball bearings. The spindle runout is controlled to within 0.002mm, guaranteeing stable, vibration-free cutting even under heavy loads. This robust spindle design ensures consistent surface finishes and reliable performance for more than 10 years of continuous use.

3. Rigid HT300 Cast Iron Base

The machine bed, worktable, and key structural components are cast from high-grade HT300 grey cast iron. After high-temperature tempering and more than 6 months of natural aging, internal stresses are fully eliminated, preventing long-term deformation. The rigid, vibration-dampening structure provides a stable foundation for high-precision grinding, maintaining dimensional accuracy over decades of operation.

4. High-Response Servo System

Our grinders use top-tier control systems from Siemens, Mitsubishi, and Delta, paired with precision servo drives. The closed-loop servo control delivers ultra-fine feed resolution down to 0.001mm, ensuring precise, repeatable positioning for every cut. With fast response and smooth acceleration/deceleration, the system supports both high-speed rough grinding and ultra-precise finishing operations.

5. Hand-Scraped Guideways for Superior Stability

To achieve the highest level of surface contact and oil retention, guideways are hand-scraped by experienced technicians with over 10 years of expertise. Finished to 10–12 contact points per square centimeter, the guideways are then lined with imported Teflon to reduce friction and wear. This traditional craftsmanship ensures smooth, stick-slip-free movement and long-term geometric accuracy.

6. High-Efficiency Electromagnetic Chuck

Equipped with a high-performance electromagnetic chuck featuring steel plate bonding technology and full copper coils, our grinders deliver strong, evenly distributed magnetic force up to 16 kg/cm². The chuck is adjustable for different workpiece sizes, supports continuous operation for over 20 hours, and features automatic auxiliary positioning. It can clamp or release workpieces in just 0.3 seconds, drastically improving production efficiency in batch grinding applications.

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The compact PSG-618M is ideal for small-scale precision grinding applications. Drive system: Left/right axes driven by Japanese imported steel wire ropes for long-lasting durability and smooth motion Best suited for light-duty, high-precision tasks in tool rooms and small workshops Compact footprint with full precision grinding capabilities	The PSG-450AS is built for larger workpieces with enhanced operational efficiency. Drive system: Left/right axes driven by synchronous belts for lighter, quieter operation Optimized for medium-sized workpieces while maintaining the same <0.002mm accuracy Combines stable grinding performance with reduced operator effort