--- title: NPR url: "https://www.wittenstein-group.com/en-us/product/npr" date: 2026-02-12 modified: 2026-02-24 lastUpdated: 2026-04-13 --- # NPR alpha Value Line Planetary gearbox The NPR planetary gearbox is part of the alpha Value Line and is ideal for applications with medium positioning accuracy requirements. Special feature: The slotted holes in the output flange enable a flexible and precise pinion-rack connection – perfect for linear motion tasks. See CAD data and configure product Downloads ![](https://www.wittenstein-group.com/typo3temp/assets/_processed_/8/c/csm_NPR-IMAGE_bf12f0fd3c.webp) ### 3 – 100 Ratio ### 51 – 800 Nm Max. torque ### ≤ 8 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 Economical to purchase, efficient to operate, and maintenance-free throughout their entire service life – alpha Value Line gearboxes offer maximum cost efficiency ![](https://www.wittenstein-group.com/epim-fs/Wittenstein-Prod-static_content/usp/24-7-clever.svg) ###### Clever drive variants The NPR planetary gearbox from the alpha Value Line is the smart choice for applications with medium positioning accuracy – ideal for a flexible and precise pinion-rack connection thanks to slotted holes in the output flange - Configure product - Technical data - Available options - Downloads | Product type | | NPR | |---|---|---| | Design | | MF; MA | | Ratio | | 3 – 100 | | Number of sizes | | 4 | | Max. backlash c) | jt | ≤ 8 arcmin | | Max. torque | T2α | 51 – 800 Nm | | Max. input speed | n1Max | 8000 rpm | | c) In relation to reference sizes | | **Output shape** | | |---|---| | Smooth shaft | ✓ | | Shaft with key d) | ✓ | | **Input shape** | | | Motor-mounted | ✓ | | **Characteristic** | | | Flange with slotted holes | ✓ | | 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) | | ![NP, NPL, NPS, NPT, NPR, NTP](https://www.wittenstein-group.com/fileadmin/processed_epim_fs/pdf-thumbnails/ALPHA-BASIC-LINE-VALUE-LINE-NP-NPL-NPS-NPT-NPR-NTP-80b2d4de8156.webp "Technical data / Dimension sheets NP / NPL / NPS / NPT / NPR / NTP") Technical data / Dimension sheets NP / NPL / NPS / NPT / NPR / NTP NP, NPL, NPS, NPT, NPR, NTP | Brochure /Catalog | Neutral | [ Download (6 KB) ](https://www.wittenstein-group.com/index.php?eID=dumpWittFile&t=f&f=3252&dl=1&st=1739&lg=0&token=8499f25544b6122d316a1c23ae2b89c224292509)[ Open in viewer ](https://www.wittenstein-group.com/index.php?eID=dumpWittFile&t=f&f=3252&st=1739&lg=0&token=2166eae0b5511d0542977423ef3f05eb0faef889) | | ![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 NPR | CAD / CAE | Neutral | [ Open in viewer ](https://cad-point.wittenstein-group.com/GearDetails/NPR) | ![](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_/d/5/csm_npr-main-image_de8e9d3ea9.webp) Multi-part clamping hub system from the high-end range for maximum process reliability Wide range of translations from i = 3 to i = 100 – for maximum adaptability Wide range of ratios from i = 3 to i = 100 – for maximum adaptability Splined shaft, smooth or keyed shaft and slotted holes - suitable for flexible assembly ### Value Linear System mit NPR ### cynapse® & smart services ### Accessories ![](https://www.wittenstein-group.com/fileadmin/_processed_/c/1/csm_22823_NPR_RMS_ZST_tabmodule_8b5d930f96.webp) The NPR for coordinated pinion-rack systems for simple requirements. Typical areas of application in woodworking machines, plasma cutting systems, or in automation. [Read more](https://www.wittenstein-group.com/en-us/product/value-linear-systems) ![](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/typo3temp/assets/_processed_/c/f/csm_RP-PLUS-IMAGE_af0c5f8b29.webp)##### [ RP+](https://www.wittenstein-group.com/en-us/product/rp) alpha Premium Line Ratio4 – 220Max. torque352 – 10450 NmBacklash≤ 1 – 3 arcmin ![](https://www.wittenstein-group.com/typo3temp/assets/_processed_/b/3/csm_NPRK-IMAGE_aee88d0229.webp)##### [ NPRK ](https://www.wittenstein-group.com/en-us/product/nprk) alpha Value Line Ratio3 – 100Max. torque33 – 700 NmBacklash≤ 11 arcmin ![](https://www.wittenstein-group.com/typo3temp/assets/_processed_/c/8/csm_PINIONS_65164beaba.webp)##### [ Pinion ](https://www.wittenstein-group.com/en-us/product/pinion) Size / module1,5 mm – 8 mmMax. feed forceGearbox-dependentDesignsFactory assembly