Sovereign Software for Unconventional Engineering Challenges
KAMAZ Innovation Center is developing SAPR-33 (CAD-33), a computer-aided engineering system for calculating gear meshes. It is designed to replace heavyweight foreign CAE packages.
A gear drive that changes torque is a fundamental component of many mechanisms and assemblies. Designing these systems requires engineers to account for dozens of interdependent variables, including gear-mesh geometry, contact stresses, fatigue strength and heat-treatment conditions. In practice, this is a multifactor, iterative process in which engineers progressively refine parameters to strike a balance among reliability, weight and manufacturability. Calculations of this complexity require specialized and expensive engineering software.
A Digital Bridge From Design to Production
KAMAZ Innovation Center LLC, a subsidiary of KAMAZ and a Skolkovo resident, has successfully carried out R&D and engineering projects for more than a decade. The center develops industrial software, digital platforms and advanced transportation technologies. While working on its own projects, its engineers encountered a shortage of Russian tools for advanced gear designs, including modified gears and nonstandard tooth profiles, forcing designers to rely on foreign software. After analyzing imported alternatives, the center’s engineers decided to turn their own engineering expertise into a standalone product – SAPR-33 (CAD-33).
SAPR-33 is a specialized CAE-level calculation and analysis tool designed exclusively for multifactor analysis of gear-mesh geometry and strength. It does not replace general-purpose CAD systems but complements them at the complex engineering analysis stage. The application can calculate geometric parameters and inspection dimensions for cylindrical gears, generate their profiles in 2D and 3D, perform strength verification calculations and determine optimal values. Dedicated functionality is also available for designing gear-cutting tools used for preliminary machining of nonstandard profiles – a task that has traditionally posed some of the greatest engineering challenges.
Deploying SAPR-33 is expected to cut design time by 40–60% and reduce the likelihood of errors. The software automatically generates technical documentation tailored to the requirements of tooling production, accelerating the handoff from engineering to the shop floor and improving machining quality.
Precise Calculations for the Heart of a Machine
The application could be useful to transmission designers, gear-manufacturing engineers and tooling designers in the automotive, agricultural equipment and heavy machinery industries. The technology could also find a market in Eurasian Economic Union countries, particularly Belarus and Kazakhstan, both of which have well-developed machinery industries. If adapted to international standards, the product could attract interest in Vietnam, India and Turkey, where machinery manufacturing is growing and there is demand for affordable alternatives to expensive Western CAE systems. Reaching those markets, however, would require a comprehensive support infrastructure and additional investment.
From Universal Platforms to Industry-Specific Tools
SAPR-33 is being developed against the backdrop of sustained growth in Russia’s engineering software market, which reached 50–55 billion rubles (about $584–643 million) in 2025, up roughly 20%. The CAD, PLM/PDM and BIM segments posted the strongest growth.
Meanwhile, demand is gradually shifting from general-purpose platforms toward specialized, industry-specific tools built for particular technological challenges. Major Russian industrial companies are already taking this approach. Rosatom, for example, developed the Logos CAE system for multiphysics simulations in the nuclear, aerospace and energy industries, along with the Multi-D platform for nuclear power plant design. Metallurgical companies including NLMK, Severstal and MMK are developing in-house simulation systems and digital twins of rolling mills. In aerospace, United Aircraft Corporation (UAC) and United Engine Corporation (UEC), both part of Rostec, are developing specialized packages for aerodynamic simulation and engine gas dynamics. The oil and gas sector is also actively developing proprietary modules for geological modeling and complex well design. Gazprom Neft, for example, is creating digital twins of oil fields to work with hard-to-recover reserves.
A New Generation of Engineering Tools
The transition to Russian-made general-purpose CAD platforms was only the first step. Companies are now developing specialized analysis tools for unique technological challenges. In the coming years, this segment will evolve under the influence of artificial intelligence, generative design and digital twins connected to the Industrial Internet of Things.
