Catalog excerpts
Tru-Stone Technologies Division Custom Engineered Granite Products, Surface Plates & Accessories
Open the catalog to page 1Starrett Tru-Stone Technologies Division Granite Products & Services Table of Contents Page Technical Information . . . . . . . . . . . . . . . . . . . . 3 Custom Engineered Granite Solutions . . . . . . 4 Granite Surface Plates . . . . . . . . . . . . . . . . . . 6 Surface Plate Accessories . . . . . . . . . . . . . . . . 9 Granite Metrology Accessory Products . . . . . 1 1 Accuracy Assurance Products & Services . . 5 1 Granite Surface Plates and Accessories In 2006, The L.S. Starrett Company acquired Tru-Stone Technologies in Waite Park, MN. With this acquisition, a broad variety of new...
Open the catalog to page 2Technical Information Accuracy Starrett Granite Surface Plates are manufactured in three grades of accuracy: Grade AA - Laboratory Grade This is typically specified for precision operations in constant temperature gaging rooms and metrology departments. Grade A - Inspection Grade This is typically specified for general work in quality control. Grade B - Toolroom Grade This is typically specified for production checking work throughout the shop. Unilateral Flatness Tolerance Overall flatness tolerance is based on unilateral measurement. All points on the work surface shall be contained...
Open the catalog to page 3Custom Engineered Granite Solutions For Oversize Parts and Assembling Starrett has unparalleled experience and expertise in building special, extra-large granite surface plates and custom products from granite to meet specific requirements. All Starrett special surface plates are made from single, solid slabs of granite quarried in one piece, machined in one piece and finished to your specified dimensions and tolerances. Tru-Vac Vacuum & Air-lift Technology Starrett provides both standard and custom solutions for vacuum chucking, positioning or air-lift part transfer. Our innovative Tru-Vac...
Open the catalog to page 4Technical Capabilities Starrett has a variety of technical capabilities that, combined with our expertise, makes us the perfect choice for your custom granite requirements. • Drilled and bored holes with precise size and location • Inserts turned and inspected in-house for quality control and custom options • T-slots and inserts bonded using proprietary method • CNC milling of patterns of clearance areas • Specialty slot milling capabilities • Unsurpassed dimensional control of flat, square, and parallel surfaces Examples of Custom Applications Capabilities Above: Multi-plane bases...
Open the catalog to page 5Granite Surface PlatesCrystal Pink® Starrett Crystal Pink Granite Surface Plates are accurate for use in metrology laboratories and wear resistant for use in abrasive shop environments. Crystal Pink is the finest, most durable granite surface plate available to industry today. The name is derived from the fact that it has the highest crystalline quartz content of any granite surface plate. Surface Finish Even distribution of large quartz crystals provides a smooth finish, which significantly reduces wear on the surface plate and the instruments used on it. This fine micro-finish, combined...
Open the catalog to page 6Granite Surface Plates Crystal Pink® • Meets or exceeds U.S. Federal Specification GGG-P-463c for flatness • Great surface hardness and wear resistance - the highest percentage of quartz crystals of any granite plate • Smooth, jewel-like quartz bearing points protect accuracy and finish of both the surface and the tools used on it • Quality and economy combined • Comparable to black granite plates while outwearing them as much as 5 to 1 • Meets or exceeds 50 lb. per square foot (24kg per 1,000 sq. cm) load bearing specifications. Available in 100 lb. (45kg) test series Standard-size plates...
Open the catalog to page 7Starrett Granite Surface Plates Superior Black Our superior black granite has low water absorption rates, thus minimizing the possibility of your precision gages rusting while setting on the plates. This black granite creates little glare resulting in less eyestrain for individuals using the plates. We have chosen our superior black granite with the specific intent of keeping thermal expansion to a minimum. How to Order Specify: 1. Surface size of plate 2. Grade AA, A or B tolerance 3. Number of ledges Special Requirements Should your application require something other than a standard...
Open the catalog to page 8Surface Plate Accessories Surface Plate Stands Our stands are constructed from welded square steel tubing to provide exceptional strength and durability. Steel crossbeams are located at the proper support points to ensure maximum surface plate accuracy. Stands are supplied with a scratch and abrasion resistant industrial powder coated finish. In addition to our standard beige gray color, other colors are available upon request and at an additional charge. Stationary stands come with leveling adjustors with the typical adjustment being 2”. Rolling stands are fabricated with two stationary...
Open the catalog to page 9Cabinet Type Surface Plate Stands Cabinet stands provide a strong, rigid support for standard plates listed, plus a handy place to store frequently used inspection tools and accessories. The standard height is 36” (900mm) from the floor to top of the surface plate. All stands made from heavy-gauge welded steel, have locking doors on the front. The 48” (1200mm) wide stands are equipped with doors front and back unless otherwise specified. Stands are supplied with leveling screws or casters as listed. Order by surface plate size and thickness. Cabinet Type Surface Plate Stands Granite Surface...
Open the catalog to page 10Granite Metrology Accessory Products Toolmakers’ Flats These handy flats are small precision surface plates that are ideal for many inspection and checking uses throughout the plant. They are especially well suited for layout work and offer an easy, portable reference for gaging small parts. Description Crystal Pink® Granite Impala Black Granite Sturdy Felt Lined Case for Toolmakers' Flat Three-Face Granite Tri-Squares Three-Face Granite Tri-Squares provide an excellent, economical way for accurately checking the X-Y-Z axes on CNC machine tools and coordinate measuring machines. Lying in...
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