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| | | | | | | | | | | | | | | | | | | | | A Racks | | | | | | | | | | ^Characteristics | | | | | | | | | | KHK stock racks are made for high precision linear motion applications. We offer a large selection of racks ranging from module 0.5 to 10 and lengths from 100 to 2000mm. The following table lists the main features. | | | | | | | | | | | | | | | | | | | | | | | Catalog No. | Module | Total | Material | Heat Treatment | Tooth Surface Finish | Precision KHK R 001 Note 3 | Features | | | | KRG • KRGF • KRGD Note 1 | 1-3 | 100,500, 1000 | SCM440 | Thermal refined | Ground | 1 | High strength and abrasion-resistant for precision linear motion. | | | | SRG -SRGF Note i | 0.5-6 | 100,300, 500,1000 | S45C | Gear teeth induction hardenedNote 2 | Ground | 3 | Reasonably priced ground racks with abrasion-resistant characteristics. | | | | KRF | 1.5-5 | 1000 | SCM440 | Thermal refined | Cut | 4 | Increased strength with SCM440 material which is thermal refined. | | | | SR-SRF • SRFD -SRFK Note i | 0.5-10 | 100,300,500, 1000,1500,2000 | S45C | Straightened & annealed | Cut | 4 | Low cost, large selections of modules and number of teeth. J series products are also available. | | | | SUR -SURF• SURFD Note 1 | 1-4 | 500,1000 | SUS304 | Solution treated | Cut | 5 | Suitable for food machinery due to SUS304 material's rust-resistant quality. | | | | PR -PRF Note 1 | 1-3 | 500,1000 | MC901 | — | Cut | 5 | Made form MC nylon, can be used without lubrication. | | | | BSR | 0.5-1 | 300 | C3604 | — | Cut | 4 | Small pitch racks made of free-cutting brass, excellent workability and high rust resistance. | | | | DR | 0.8-2 | 2000 | Duracon (M25-44) | — | Injection Molded | 8 | Can be used in applications due to flexibility of injection molded racks which metal racks are lacking in. | | | | SRO -SROS | 1-6 | 500,1000 | S45C | Straightened & annealed | Cut | 4 | Convenient in applications where the rack has the reciprocal motion. S Type is easy to install. | | | | SURO | 1-3 | 500,1000 | SUS303 | Solution treated | Cut | 5 | Same dimensions as SRO racks, except in stainless steel. Use where rust-resistance is required. | | | | KRHG -KRHGF Note 1 | 1-3 | 100,500, 1000 | SCM440 | Thermal refined | Ground | 1 | Excellent products with high precision and strength, and low noise and abrasion characteristics. | | | | SRH -SRHF • SRHFD Note 1 | 2-3 | 100,500, 1000 | S45C | Straightened & annealed | Cut | 5 | Effective in reducing noise and vibration due to larger contact ratio of helical gears. | | | | | | | | | | | | | | | | | | | | | | | [NOTE 1] The catalog numbers in the above table with (F) suffix have both ends machined so that they can be butted against each other to make any desired length. The items with (D) have mounting screw holes for easier assembly. [NOTE 2] Products with module less than 0.8 are thermal refined, without their gear teeth being induction hardened. [NOTE 3] Precision grade standard of racks are set by KHK. Please see "Precision of Racks" in Selection Hints section for details. • For safe handling and to prevent damage such as deformation, KHK stock racks have round chamfering at the corners of the top land of the gear tooth. This rounded chamfered shape is patented by KHK. Because it is effective for reducing noise, all of KHK products, except for BSR and PR racks, have this chamfering treatment. • Black colored products are KHK stock gears that have an applied black oxide coating for rust resistance; this 'blackness' is a product characteristic of KHK stock gears. | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
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