--- title: RPK+ url: "https://www.wittenstein-group.com/en-uk/product/rpk" date: 2026-02-16 modified: 2026-02-24 lastUpdated: 2026-04-13 --- # RPK+ alpha Premium Line Hypoid gearbox TheRPK+ hypoid gearbox is optimized for rack and pinion applications. The pinions, which are specially matched to the gearbox, enable the transmission of maximum feed forces. See CAD data and configure product Downloads ![](https://www.wittenstein-group.com/typo3temp/assets/_processed_/9/b/csm_RPK-PLUS-IMAGE_156ee43dfc.webp) ### 48 – 5500 Ratio ### 1100 – 10450 Nm Max. torque ### ≤ 1.3 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/49-1-machineIntegration.svg) ###### Machine connection Integrated slotted holes allow easy adjustment of pinion and rack and increase system rigidity by eliminating the need for adjustment plates ![](https://www.wittenstein-group.com/epim-fs/Wittenstein-Prod-static_content/usp/50-1-optimizedBearings.svg) ###### Absorption of maximum forces Reinforced bearing to absorb maximum forces – with a compact design ![](https://www.wittenstein-group.com/epim-fs/Wittenstein-Prod-static_content/usp/4-compact.svg) ###### Compactness The axially short, right-angled design enables even more compact machine concepts - Configure product - Technical data - Available options - Downloads | Product type | | RPK+ | |---|---|---| | Design | | MA | | Ratio | | 48 – 5500 | | Number of sizes | | 4 | | Max. backlash c) | jt | ≤ 1.3 arcmin | | Max. torque | T2α | 1100 – 10450 Nm | | Max. input speed | n1Max | 7500 rpm | | Torsional rigidity | Ct21 | 1901 Nm/arcmin | | Max. tilting moment | M2KMax | 34000 Nm | | c) In relation to reference sizes | | **Output shape** | | |---|---| | Flange | ✓ | | System output | ✓ | | **Input shape** | | | Motor-mounted | ✓ | | **Characteristic** | | | Flange with slotted holes | ✓ | | Food-grade lubrication a) b) | ✓ | | **System solutions** | | | Linear system (rack / pinion) | ✓ | | a) Performance reduction: Technical data available on request b) Please contact WITTENSTEIN alpha | | Document name | Document type | Language | Downloads | |---|---|---|---| | ![XP+, RP+,XPK+, RPK+, XPC+, RPC](https://www.wittenstein-group.com/fileadmin/processed_epim_fs/pdf-thumbnails/ALPHA-PREMIUM-LINE-EN-eb3ed77d3f53.webp "Catalog alpha Premium Line") Catalog alpha Premium Line XP+, RP+,XPK+, RPK+, XPC+, RPC | Brochure /Catalog | English | [ Download (17 KB) ](https://www.wittenstein-group.com/index.php?eID=dumpWittFile&t=f&f=990&dl=1&st=1&lg=2&token=55bd982db2aa3410914f4a39aa8290bd315aedca)[ Open in viewer ](https://www.wittenstein-group.com/index.php?eID=dumpWittFile&t=f&f=990&st=1&lg=2&token=356f7023f5ea2496a362bf908b083e0eb83c4b86) | | ![XPK+, RPK+](https://www.wittenstein-group.com/fileadmin/processed_epim_fs/pdf-thumbnails/ALPHA-PREMIUM-LINE-XPK-RPK-EN-527a918e19f8.webp "Technical data / Dimension sheets XPK+ / RPK+") Technical data / Dimension sheets XPK+ / RPK+ XPK+, RPK+ | Brochure /Catalog | English | [ Download (1 KB) ](https://www.wittenstein-group.com/index.php?eID=dumpWittFile&t=f&f=998&dl=1&st=1&lg=2&token=6cb2981d235818b871486d905778c05d11765a05)[ Open in viewer ](https://www.wittenstein-group.com/index.php?eID=dumpWittFile&t=f&f=998&st=1&lg=2&token=92aaa0af5878ce67ce0d05a0feec50b4ef85f9e2) | | ![](https://www.wittenstein-group.com/fileadmin/processed_epim_fs/pdf-thumbnails/OPERATING-MANUAL-RP-RPC-RPK-EN-dcc5993a415f.webp "alpha Premium Line") alpha Premium Line | Operating manual | English | [ Download (3 KB) ](https://www.wittenstein-group.com/index.php?eID=dumpWittFile&t=f&f=1103&dl=1&st=1&lg=2&token=5eb2b08f928c0de43f23484f4787c848b3da1848)[ Open in viewer ](https://www.wittenstein-group.com/index.php?eID=dumpWittFile&t=f&f=1103&st=1&lg=2&token=e628b53b5fec482443a6a87dae52ecdd9b25981a) | | ![](https://www.wittenstein-group.com/fileadmin/processed_epim_fs/pdf-thumbnails/INFORMATION-SEALING-PLATE-EN-fef33f8cab9d.webp "Sealing Plate") Sealing Plate | Operating manual | English | [ Download (121 B) ](https://www.wittenstein-group.com/index.php?eID=dumpWittFile&t=f&f=1038&dl=1&st=1&lg=2&token=562b41e29aab7ee34e6d4f2747e36dc606db869f)[ Open in viewer ](https://www.wittenstein-group.com/index.php?eID=dumpWittFile&t=f&f=1038&st=1&lg=2&token=48e7fcd3016c09976cf2559ef2cd239263cd33d1) | | Ordering code / CAD data RPK+ | CAD / CAE | English | [ Open in viewer ](https://cad-point.wittenstein-group.com/DetailsPremium/RPK+) | ![](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.co.uk](#) [ +44 1275 395-600 ](tel:+441275395-600) [ To the contact form ](https://www.wittenstein-group.com/en-uk/contact-locations/contact) ![](https://www.wittenstein-group.com/fileadmin/_processed_/f/1/csm_rpk-plus-main-image_895086c8c1.webp) Use of a metal bellows coupling for thermal length compensation and protection of the motor bearing High-quality hypoid stage with gear ratios of i = 3 - 10 in the angular stage Integrated slotted holes reduce design and assembly effort to a minimum Different centering options for maximum design freedom Optimized for rack and pinion applications ### The R-flange sets the standard ### Premium Linear System with RPK+ ### System output for even greater flexibility ### Rigidity for high-precision drive solutions ### cynapse® & smart services ![](https://www.wittenstein-group.com/fileadmin/_processed_/8/f/csm_rpk-flansch_slider_96f9933336.webp) The R-flange is standard for the RPK+. The slotted holes integrated into the gearbox flange allow easy adjustment of the gearbox with the pinion mounted on the rack. ![](https://www.wittenstein-group.com/fileadmin/_processed_/7/7/csm_rpk-plus-ritzel-innovative-zahnstange_slider_913089316a.webp) The RPK+ for perfectly matched rack and pinion systems for high to very high demands. Typical areas of application are laser machines, wood, plastic, and composite material processing centers, cutting machine tools, e.g., HSC milling machines, as well as highly dynamic and precise handling applications. [Read more](https://www.wittenstein-group.com/en-uk/product/premium-linear-systems) ![](https://www.wittenstein-group.com/fileadmin/_processed_/6/9/csm_Systemabtrieb_57304_tabmodule_ef3f0e7f95.webp) The system output can be used to implement a wide variety of gearbox and pinion configurations. The inputs can be optimized for rigidity, feed force, or feed speed, depending on requirements. ![](https://www.wittenstein-group.com/fileadmin/_processed_/2/7/csm_hysterese_d727eebd08.webp) The high torsional rigidity of the RP+ gearboxes, combined with the tilting rigidity, C2K,lin, and engagement spring stiffness, Cγ, together with a highly rigid design, have a positive effect on the natural frequency and thus on the control behavior of the machine. ![](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/en-uk/products/software-and-digitalization/cynapse-smart-services) 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-uk/product/rp) alpha Premium Line Ratio4 – 220Max. torque352 – 10450 NmBacklash≤ 1 – 3 arcmin ![](https://www.wittenstein-group.com/typo3temp/assets/_processed_/a/b/csm_RPC-PLUS-IMAGE_cfbc0e1b19.webp)##### [ RPC+](https://www.wittenstein-group.com/en-uk/product/rpc) alpha Premium Line Ratio22 – 55Max. torque1402 – 7535 NmBacklash≤ 1.3 arcmin ![](https://www.wittenstein-group.com/typo3temp/assets/_processed_/6/d/csm_PLS-IMAGE_39abb2f4db.webp)##### [ Premium Linear Systems ](https://www.wittenstein-group.com/en-uk/product/premium-linear-systems) alpha Premium Line Max. feed force5.45 – 112 kNMax. feed velocity91 – 333 m/minPositioning accuracy (single drive)≥ 30 µm ![](https://www.wittenstein-group.com/typo3temp/assets/_processed_/c/8/csm_XP-PLUS-IMAGE_bd51a879af.webp)##### [ XP+](https://www.wittenstein-group.com/en-uk/product/xp) alpha Premium Line Ratio3 – 100Max. torque50 – 3840 NmBacklash≤ 1 – 4 arcmin ![](https://www.wittenstein-group.com/typo3temp/assets/_processed_/b/c/csm_RGK-IMAGE_f384f79805.webp)##### [ Galaxie® GH ](https://www.wittenstein-group.com/en-uk/product/galaxie-gh) Ratio72 – 240Max. torque1086 – 4050 NmBacklash0 arcmin