SHAFT
15Pages

The NB shaft can be used in a wide range of applications as a mechanical component from straight shaft to spindle shaft. NB's expertise in machining and heat-treatment turns into manufacturing spindle shaft, roll shaft, and general machinery shaft for rotational motion. NB's high accuracy technology answers various shaft machining requirements. Advanced Machining Technology NB performs a wide variety of highly accurate machining processes to provide custom shafting from relatively simple machining, such as tapping and shaft stepping to the more demanding high- speed rotating shafts and...

SHAFT CALCULATION OF DEFLECTION AND DEFLECTION ANGLE The following formulas are used to obtain the deflection and its angle of the shaft. Typical conditions are listed in Table F-3. Table F-3 Formulas for Calculating Deflection and Deflection Angle ● For solid shaft Table F-4 Solid Shaft The moment of inertia of area (I) is obtained using the following formulas: support method specification support 1 ┃ support formula for deflection i fixed 2 ┃ fixed support 3 ┃ support fixed 4 ┃ fixed support 5 ┃ support 6 fixed ┃ fixed δmax support 9 ┃ support fixed 10 ┃ fixed i 2 2 Pℓ 2 3Pℓ C 16EI i δmax...

part number structure example rnimRClx outer diameter tolerance machined (example) part number outer diameter material: high-carbon chromium bearing steel (SUJ2) Tolerances other than g6 are available upon request. machined (example) part number outer diameter material: martensite stainless steel (equivalent to SUS440C) The maximum length of hardening is up to 4500mm for shafts with diameter over 80mm. Tolerances other than g6 are available upon request.

machined (example) part number outer diameter material: high-carbon chromium bearing steel (SUJ2) Tolerances other than g6 are available upon request. NB CENTER-LINED TAPPED SHAFT A larger diameter shaft can overcome problems in maintaining precision functionality when a high or unbalanced load is applied. A combination of the center-lined tapped shaft together with the SA type support rail is ideal in such cases, (see pages F-18,19) The center-lined tapped shaft is standardized to simplify shaft part number structure example fSTTT^Hh NB Center-Lined Tapped Shaft NB Center-Lined Tapped...

machined (example) material: high-carbon chromium bearing steel (SUJ2) 1kg=2.205lbs Tolerances other than g6 are available upon request. machined (example) material: martensite stainless steel (equivalent to SUS440C) Tolerances other than g6 are available upon request.

- NB Inch Pre-Drilled Shaft - part number structure pre-drilled shaft outer diameter tolerance material: high-carbon chromium bearing steel (SUJ2) Tolerances other than *g6 are available upon request. Longer lengths are also available. - NB Inch Pre-Drilled Stainless Steel Shaft - part number structure SNWS type pre-drilled shaft outer diameter tolerance material: martensite stainless steel (equivalent to SUS440C) Tolerances other than *g6 are available upon request. Longer lengths are also available.

These components save design/assembling time and ease shaft installation. SH-SH-A-WH-A type These are most commonly used compact shaft supporters. SH type is made of cast iron and SH-A/ WH-A type is made of aluminum alloy. SHF-SHF-FC type These are flanged type shaft supporters for a compact design. SHF is made of aluminum alloy and SHF-FC (shaft diameter 35 and over) is made The accuracy of the SA support rails are measured as Figure F-1 Measurement Method SA-WA-LWA type (shaft support rail) These support rails support shafts from below to avoid shaft deflection for a long-stroke/high load...

- Shaft Supporter - part number structure shaft diameter - Shaft Supporter Flange Type part number structure example gjgrara shaft diameter blank: aluminum alloy

- Shaft Supporter - (Inch Standard) part number structure example [flUEE! machined reference edge

- Shaft Support Rail - (Inch Standard) part number structure machined reference edge All sizes are also available without pre-drilled mounting holes. Complete shaft-rail assemblies are also available as well as custom drilling and lengths. Please send drawings with customer specifications. - Low Shaft Support Rail (Inch Standard) part number structure

Due to the combined tolerances of the bush's bore and the shaft's diameter, accuracy can be affected by clearance or increased dynamic friction caused by preloading. NB's FIT Series takes advantages of the lower cost slide bush and the precision ground shaft to achieve a target clearance in order for the linear system to produce a smooth, high-accuracy performance. part number structure _shaft part number number of slide bush on one shaft • Please refer to corresponding catalog pages for details. • Please specify on the drawing about the shaft machining, radial clearance, match-marking,...

RANGE AND SPECIFICATIONS OF MACHINING NB does shaft-machining based on the customer requirements. maximum diameter maximum length surface roughness straight ness customer specification customer specification customer specification customer specification Internal Surface Grinding The straight/tapered portion of the inner spindle Deep Hole Machining Screw Grinding Triangular and trapezoidal threading can be Compatible Parts Special nuts compatible with a given shaft can be machined. The inner surface and outer diameter of the tapered portion can be ground. Material and Heat Treatment NB's...

SHAFT EXAMPLES OF MACHINING EXAMPLES OF MACHINING Roll Shaft Quill Shaft SHAFT Please visit at NB Website for more examples of machining. F-28 F-29