Overview

This document provides comprehensive technical details for KENT USA Precision Surface Grinders, covering a wide range of models from small to heavy-duty grinders with various configurations including single-head, double-column, and multi-head designs.

1. Product Models and Types

The grinders are categorized into four main types:

• Heavy Duty Precision Surface Grinders: Models SGS-2448 to SGS-24180 AH/AHD series and SGS-3468 to SGS-3488 AHD series, designed for large-scale, heavy-duty grinding.
• Single Head Double Column Precision Grinders: Models SGS-1512 to SGS-3012 AHD/PNC, offering precise control with advanced motor options.
• Two Heads Precision Double Column Grinders: Models SGS-T2012 to SGS-T6012 AHD/PNC, featuring dual spindle motors for enhanced productivity.
• Super Two Heads Precision Double Column Grinders: Models SGS-T4018 to SGS-T12018 PNC, built for very large workpieces with heavy-duty construction.

2. Profile Dimensions

Each model series includes detailed dimensional data such as:

• Table working surface dimensions (width x length)
• Maximum grinding surface area
• Maximum horizontal and cross travel distances
• Distance from table surface to spindle center
• Additional size parameters labeled A through K indicating machine size and travel limits

Dimensions are provided in both millimeters and inches for global reference. For example, the SGS-2040 model features a 1800 mm x 2725 mm table with 3000 mm horizontal travel and 1016 mm cross travel.

3. Technical Specifications

Key mechanical and electrical specifications include:

• Table speeds ranging from 5 to 25 m/min (16–80 fpm)
• Automatic crossfeed with frequency control at 60 Hz
• Micrometer-precision handwheels for vertical and crossfeed adjustments (graduations as fine as 0.002 mm or 0.0001")
• Spindle motor power between 10 HP and 25 HP depending on model
• Hydraulic pump motors typically 5 HP or higher
• Crossfeed and downfeed motors, including AC servo motor options for PNC models
• Grinding wheel sizes varying by model, e.g., 406x50x127 mm or 510x75x203.2 mm
• Spindle speeds adjusted for 50/60 Hz power supply, typically 1450–1750 RPM
• Coolant motor power and flow rates tailored to model size
• Magnetic chuck load capacities up to 2100 kg (4620 lbs) or higher for larger models
• Machine weights ranging from approximately 4500 kg to over 32000 kg
• Packing dimensions provided for shipping and installation planning

4. Model-Specific Highlights

• SGS-2040 to SGS-S2460 Series: Small to medium grinders with table sizes up to 600x1500 mm and grinding surfaces up to 608x1524 mm.
• SGS-2448 to SGS-3488 Series: Heavy-duty grinders with larger tables up to 600x4500 mm, suitable for bigger workpieces.
• SGS-1512 to SGS-3012 Series: Single head double column grinders with working surfaces up to 1300x3100 mm and advanced DC servo motor options.
• SGS-T2012 to SGS-T6012 Series: Two-head double column grinders with working surfaces up to 1300x6000 mm, featuring dual spindle motors and servo controls.
• SGS-T4018 to SGS-T12018 Series: Super two-head double column grinders with very large working surfaces (up to 1800x6000 mm) and robust construction for large-scale precision grinding.

5. Operational Features and Controls

• Automatic crossfeed with frequency control at 60 Hz for consistent feed rates
• Micrometer handwheels for precise vertical and crossfeed adjustments with fine graduations
• Servo motor options for downfeed and crossfeed on PNC models, enabling enhanced precision and automation
• Variable table speeds and adjustable travel ranges to suit diverse grinding applications

6. Machine Specifications

• Handwheel Scales: Downfeed handwheel with millimeter scale; crossfeed handwheel with single gradation.
• Adjustable Travel: Longitudinal bevel adjustable from approximately 150 mm to 6300 mm (5.9" to 248.7"); crossfeed travel adjustable within a similar range.
• Motors: Spindle motors: Horizontal axle (H.AXLE) 30 HP x 6P; Vertical axle (V.AXLE) 25-30 HP x 4P; Hydraulic pump motors 10-15 HP x 4P; Crossfeed and downfeed motors use AC servo motors.
• Grinding Wheels: Sizes vary, e.g., 610x100x254 mm (24"x4"x10") for H.AXLE; 406x50x127 mm (16"x2"x5") for V.AXLE.
• Spindle Speeds: H.AXLE: 1050 RPM at 60 Hz, 900 RPM at 50 Hz; V.AXLE: 1750 RPM at 60 Hz, 1450 RPM at 50 Hz.
• Coolant Pump Flow Rate: 250 to 400 L/min depending on model.
• Load Capacity: Magnetic chuck load capacity ranges from 5,000 kg (11,000 lbs) to 12,000 kg (26,400 lbs); maximum load capacity ranges from 14,000 kg (30,800 lbs) up to 125,000 kg (275,000 lbs).
• Net Weight: Varies by model from 45,000 kg (99,000 lbs) to 125,000 kg (275,000 lbs).

7. Model Dimensions and Travel Ranges

• Models SGS-T7018PNC to SGS-T12018PNC feature table sizes from 300x7000 mm (70.9"x275.6") up to 1800x12000 mm (70.9"x472.4").
• Alternate table sizes range from 1200x7100 mm (86.6"x279.5") up to 2200x12100 mm (86.6"x476.4").
• Longitudinal travel up to 12,200 mm (480.3").
• Crossfeed travel approximately 2300 mm (90.6").
• Bevel angle adjustment ±90°.
• Feed rates from 5 to 25 m/min.

8. Standard and Optional Accessories

• Standard Accessories: Operation manual, tool box with tools, wheel flange, wheel balancing base and arbor, diamond dresser and base, working light, coolant equipment.
• Optional Accessories: Dust suction equipment, coolant equipment with paper filter and magnetic separator, manual and hydraulic overhead parallel dressing attachments, permanent and electromagnetic chucks (including inclinable electromagnetic chuck), angle and radius forming attachments, sine bar, precision vise, electrode magnetized equipment.

9. Manufacturer's Policy and Additional Notes

• KENT USA follows a continuous improvement policy and reserves the right to modify specifications, mechanics, or designs without prior notice or obligation.
• Optional specifications are clearly marked in detailed specification sheets.
• Contact information for KENT INDUSTRIAL (USA) INC. is provided for further inquiries.

Summary

This document serves as a detailed technical reference for engineers, procurement specialists, and operators involved in the selection, installation, and maintenance of KENT USA Precision Surface Grinders. It covers model variants, dimensional profiles, mechanical and electrical specifications, operational features, and accessory options, ensuring informed decision-making for industrial precision grinding applications.