--- title: NPSK url: "https://www.wittenstein-group.com/en-us/product/npsk" date: 2026-02-12 modified: 2026-02-24 lastUpdated: 2026-04-13 --- # NPSK alpha Value Line Bevel gearbox The NPSK bevel gearbox combines the proven SP+ output geometry with a compact and visually appealing angled step. Thanks to its economical acquisition costs and high operating efficiency, it is the ideal solution for cost-conscious applications with high demands on design and performance. See CAD data and configure product Downloads ![](https://www.wittenstein-group.com/typo3temp/assets/_processed_/5/0/csm_NPSK-IMAGE_538f42b5f7.webp) ### 3 – 100 Ratio ### 33 – 700 Nm Max. torque ### ≤ 11 arcmin Backlash [ Technical details ](#tech-details) [ Further information ](#further-info) [ Related products ](#related) [ Request consultation ](#consultation) ![](https://www.wittenstein-group.com/epim-fs/Wittenstein-Prod-static_content/usp/57-options.svg) ###### Universally applicable The planetary gearboxes of the alpha Value Line are suitable for universal application and offer the best, most economical solution for virtually all requirements – on each axis and for all industries ![](https://www.wittenstein-group.com/epim-fs/Wittenstein-Prod-static_content/usp/60-1-costEffectiveness.svg) ###### High cost-effectiveness The NPSK bevel gearbox impresses with its low acquisition costs, high operating efficiency and maintenance-free operation over its entire service life ![](https://www.wittenstein-group.com/epim-fs/Wittenstein-Prod-static_content/usp/8-6-performance.svg) ###### Increased performance The NPSK planetary gearbox offers the proven output geometry of the SP+ and enables higher external forces – for maximum efficiency and precision, even in cost-optimized applications - Configure product - Technical data - Available options - Downloads | Product type | | NPSK | |---|---|---| | Design | | MF | | Ratio | | 3 – 100 | | Number of sizes | | 4 | | Max. backlash c) | jt | ≤ 11 arcmin | | Max. torque | T2α | 33 – 700 Nm | | Max. input speed | n1Max | 5000 rpm | | c) In relation to reference sizes | | **Output shape** | | |---|---| | Smooth shaft | ✓ | | Shaft with key d) | ✓ | | Splined shaft (DIN 5480) | ✓ | | **Input shape** | | | Motor-mounted | ✓ | | **Characteristic** | | | Food-grade lubrication a) b) | ✓ | | **System solutions** | | | Linear system (rack / pinion) | ✓ | | **Accessory** (for more information, see the relevant product pages) | | | Coupling | ✓ | | a) Performance reduction: Technical data available on request b) Please contact WITTENSTEIN alpha d) Performance reduction: For detailed sizing, please use our [cymex®](https://stage.wittenstein-group.com/de-de/produkt/cymex-5) design software | | Document name | Document type | Language | Downloads | |---|---|---|---| | ![CP, CPS, CPK, CPSK, NP, NPL, NPS, NPT, NPR, NTP, NPK, NPLK, NPSK, NPTK, NPRK, CVS, CVH, NVS, NVH, HDV](https://www.wittenstein-group.com/fileadmin/processed_epim_fs/pdf-thumbnails/ALPHA-BASIC-LINE-VALUE-LINE-US-fb4a30e90750.webp "Catalog alpha Basic Line & alpha Value Line") Catalog alpha Basic Line & alpha Value Line CP, CPS, CPK, CPSK, NP, NPL, NPS, NPT, NPR, NTP, NPK, NPLK, NPSK, NPTK, NPRK, CVS, CVH, NVS, NVH, HDV | Brochure /Catalog | American English | [ Download (22 KB) ](https://www.wittenstein-group.com/index.php?eID=dumpWittFile&t=f&f=4114&dl=1&st=1739&lg=0&token=53d8b5d5ef298cf06e536271c220fab32aeeade3)[ Open in viewer ](https://www.wittenstein-group.com/index.php?eID=dumpWittFile&t=f&f=4114&st=1739&lg=0&token=cfadb9ddb03689be8f750f4f29e33e5ee0d02005) | | ![NPK, NPLK, NPSK, NPTK, NPRK](https://www.wittenstein-group.com/fileadmin/processed_epim_fs/pdf-thumbnails/ALPHA-BASIC-LINE-VALUE-LINE-NPK-NPLK-NPSK-NPTK-NPRK-8bdbd5b0c46f.webp "Technical data / Dimension sheets NPK / NPLK / NPSK / NPTK / NPRK") Technical data / Dimension sheets NPK / NPLK / NPSK / NPTK / NPRK NPK, NPLK, NPSK, NPTK, NPRK | Brochure /Catalog | Neutral | [ Download (2 KB) ](https://www.wittenstein-group.com/index.php?eID=dumpWittFile&t=f&f=3253&dl=1&st=1739&lg=0&token=e8b2dbd94d86741c57e8007f5beb11c232001ad8)[ Open in viewer ](https://www.wittenstein-group.com/index.php?eID=dumpWittFile&t=f&f=3253&st=1739&lg=0&token=0c7fcbabbd789c4d50b47114f528080a115ce446) | | ![Technical documents CP, CPS, CPK, CPSK, NP, NPL, NPS, NPT, NPR, NTP, NPK, NPLK, NPTK, NPRK](https://www.wittenstein-group.com/fileadmin/processed_epim_fs/pdf-thumbnails/OPERATING-MANUAL-NP-NPK-NPL-NPLK-NPR-NPRK-NPS-NPSK-NPT-NPTK-NTP-CP-CPK-CPS-CPSK-ea25c5cc4d41.webp "alpha Value Line / alpha Basic Line") alpha Value Line / alpha Basic Line Technical documents CP, CPS, CPK, CPSK, NP, NPL, NPS, NPT, NPR, NTP, NPK, NPLK, NPTK, NPRK | Operating manual | Neutral | [ Download (3 KB) ](https://www.wittenstein-group.com/index.php?eID=dumpWittFile&t=f&f=3321&dl=1&st=1739&lg=0&token=42f5985a1ce2b3567fe78a37fec8fbf9b55c5d16)[ Open in viewer ](https://www.wittenstein-group.com/index.php?eID=dumpWittFile&t=f&f=3321&st=1739&lg=0&token=985ed6e750bb9fd85c0169596c7319737296e33a) | | ![](https://www.wittenstein-group.com/fileadmin/processed_epim_fs/pdf-thumbnails/INFORMATION-SEALING-PLATE-190dba672cbe.webp "Sealing Plate") Sealing Plate | Operating manual | Neutral | [ Download (121 B) ](https://www.wittenstein-group.com/index.php?eID=dumpWittFile&t=f&f=3293&dl=1&st=1739&lg=0&token=c3d69de968cae2150db287914e6e8f2b6fe59b02)[ Open in viewer ](https://www.wittenstein-group.com/index.php?eID=dumpWittFile&t=f&f=3293&st=1739&lg=0&token=94da936c558ddf2b56f754082763bd13e3759ab7) | | Ordering code / CAD data NPSK | CAD / CAE | Neutral | [ Open in viewer ](https://cad-point.wittenstein-group.com/GearDetails/NPSK) | ![](https://www.wittenstein-group.com/fileadmin/_processed_/9/c/csm_logo-sculpture_e38190faf6.webp) Contact us ------------ Would you like to learn more about our solutions? We would be happy to advise you—personally, competently, and tailored to your requirements. [info@wittenstein-us.com](#) [ 1 630 540-5300 ](tel:16305405300) [ To the contact form ](https://www.wittenstein-group.com/en-us/contact-locations/contact) ![](https://www.wittenstein-group.com/fileadmin/_processed_/6/b/csm_npsk-main-image_f2a737c3b2.webp) Compatible with all common servo motors – thanks to screwed adapter plate and large selection of motor shaft diameters The particularly compact angle step allows insertion even in minimal installation spaces The beautifully designed housing emphasizes the dynamics of the gearbox and adds visual accents Wide range of ratios from i = 3 to i = 100 – for maximum application versatility A wide range of options for maximum adaptability: • Smooth shaft • Shaft with key • Splined shaft according to DIN 5480 ### cynapse® & smart services ### Accessories ![](https://www.wittenstein-group.com/fileadmin/_processed_/f/9/csm_cynapse-produkseite-element_slider_3783d47093.webp) With cynapse® and smart services, you can unleash the full potential of your drive system: sensor data is processed, visualized, and analyzed intelligently. Find out how the combination of gearboxes with cynapse® and our smart services can make your digital production faster, safer, and more efficient. [Read more](https://www.wittenstein-group.com/int-en/products/software-and-digitalization/cynapse-smart-services) ![](https://www.wittenstein-group.com/fileadmin/_processed_/3/0/csm_ELASTOMER-COUPLING-IMAGE-tabmodule_3a6e5abaa1.webp) Optimization of your value chain: Utilize the combination of gearboxes and accessories in a complete package to streamline your internal processes. Find suitable elastomer couplings for our products. [Read more](https://www.wittenstein-group.com/en-us/product/elastomer-couplings) Related products ------------------ ![](https://www.wittenstein-group.com/epim-fs/Wittenstein-Prod-AssetsPublic/SP-PLUS-IMAGE.PNG)##### [ SP+](https://www.wittenstein-group.com/en-us/product/sp) alpha Advanced Line Ratio3 – 100Max. torque48 – 5700 NmBacklash≤ 1 – 4 arcmin ![](https://www.wittenstein-group.com/epim-fs/Wittenstein-Prod-AssetsPublic/NPS-IMAGE.PNG)##### [ NPS ](https://www.wittenstein-group.com/en-us/product/nps) alpha Value Line Ratio3 – 100Max. torque51 – 800 NmBacklash≤ 8 arcmin ![](https://www.wittenstein-group.com/typo3temp/assets/_processed_/8/d/csm_SPC-PLUS-IMAGE_a6d0c4fbc4.webp)##### [ SPC+](https://www.wittenstein-group.com/en-us/product/spc) alpha Advanced Line Ratio4 – 20Max. torque48 – 1936 NmBacklash≤ 2 – 4 arcmin ![](https://www.wittenstein-group.com/typo3temp/assets/_processed_/9/a/csm_NPLK-IMAGE_39e6df13ec.webp)##### [ NPLK ](https://www.wittenstein-group.com/en-us/product/nplk) alpha Value Line Ratio3 – 100Max. torque33 – 700 NmBacklash≤ 11 arcmin