Intermediate Shafts
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Sunmach is an ISO 9001:2015 certified global manufacturer specializing in premium Stainless Steel Intermediate Shafts, SS Intermediate Shafts, and high-strength Duplex Intermediate Shafts, custom-machined to client blueprints to deliver exceptional torsional rigidity and dynamic balance in transitional power transmission lines. Acting as the critical mechanical bridge between prime movers (motors, turbines, or engines) and driven machinery (high-capacity pumps, compressors, or heavy-duty agitators), our intermediate shafts are engineered to resolve horizontal and vertical alignment offsets, suppress harmful torsional vibration harmonics, and sustain absolute mechanical stability under cyclic loading. By utilizing centerless cylindrical grinding, multi-axis CNC turning, and precision forging, we fabricate intermediate shafts across a broad spectrum of configurations, eliminating the primary causes of transitional driveline failure, including keyway stress cracking, coupling fatigue, and lateral whirling resonance. Specially designed to operate under combined mechanical stresses, thermal gradients, and aggressive process chemicals, our custom-finished Custom Intermediate Shafts provide outstanding structural stability across a broad spectrum of temperatures ranging from −40 °C to +300 °C. Sourced exclusively from premium global mills, our dual-phase duplex and super duplex alloys deliver nearly double the yield strength of traditional austenitic steels, making them highly specified for offshore oil platforms, seawater desalination plants, and aggressive chemical processing tanks. Backed by rigorous quality validation, compliance with international material specifications, and complete mill traceability, Sunmach ensures zero-failure performance, safeguarding mission-critical intermediate machinery against premature fatigue, coupling wear, and expensive process downtime.
Intermediate Shafts
Definition -An Intermediate Shaft is a rotating shaft placed between driving and driven shafts to transfer power and motion. Its purpose is to relay rotation where direct connection is not possible and to help adjust speed or torque. It is commonly used in gearboxes, automotive transmissions, and industrial power transmission systems.
Sunmach stands as a premier international manufacturer and provider of high-precision Intermediate Shafts, expertly crafted from top-tier Nickel Alloys and Stainless Steel. These Intermediate Shafts are made precisely as per the customer drawings and very much within the given dimensional tolerances. These Tailor made Shafting’s are engineered for the most critical industrial applications.
We are an ISO 9001:2015 certified company, demonstrating our commitment to rigorous quality standards and consistent product excellence to deliver the best of the Nickel Alloys & Stainless Steel Intermediate Shafts.
We make these Intermediate Shafts from a range of high-performance & exotic materials such as : Hastelloy® C-276, Hastelloy® C-22, Hastelloy® B-2, Monel® 400, Monel® K-500, Inconel® 600, Inconel® 625, Inconel® 718, Titanium Grade 2, Titanium Grade 5, Titanium Grade 7, Duplex S31803, Duplex S32205, Super Duplex S32750 to various Stainless Steel grades of SS 304L, SS 316L SS 310, SS 310H, SS 347H, etc followed by Special Stainless Steel Grades such as 904L Stainless Steel, UNS N08904, DIN EN1.4539 Nitronic® 50, Nitronic® 60, UNS S21800, DIN EN, 254 SMO, UNS S31254, DIN EN 1.454, Stainless Steel 410 & Stainless Steel 420 etc.
Sunmach’s extensive manufacturing capabilities and In-Stock Genuine & Authentic Raw Material availability allows us to support demanding industrial requirements with durable, corrosion-resistant, heat resistant & reliable Shafts made from Genuine Nickel Alloys and Stainless Steel Material, delivered dot in time to any corner of the world, supported by all required test certificates and with 100% traceability.
Stainless Steel & Nickel Alloy Intermediate Shafts Application Industries
Sunmach serves a diverse range of markets including Pump Industries, Chemical Processing, Semiconductor, Power Generation, Aerospace, Oil & Gas, Pharmaceutical, Food & Beverage, Marine, Pulp & Paper, Petrochemical & Refining, Air Pollution Control and Water Treatment.
Sizes
| Maximum Diameter: | 125mm Diameter |
| Maximum Length: | 3050 mm |
| Maximum Weight: | 300 Kgs (Finished Single Shaft) |
Frequently Asked Questions
Common questions about Sunmach Stainless Steel & Duplex Intermediate Shafts
Specifying Duplex Intermediate Shafts provides nearly double the mechanical load-bearing capacity and superior fatigue limits, allowing designers to utilize smaller shaft diameters, reducing rotational mass and bearing loads without sacrificing safety margins.
By maintaining strict runout tolerances and custom-tuning the torsional stiffness of our Custom Intermediate Shafts, we ensure uniform torque transmission, preventing harmonic vibration build-up that would otherwise destroy bearings and gearboxes.
A hollow design provides an exceptional strength-to-weight ratio for transitional power lines, reducing overall weight by up to 50% with minimal loss to torsional stiffness, decreasing bearing preloads and safely increasing critical whirling speeds.
Dynamically balancing our SS Intermediate Shafts to ISO 1940 Grade G1.0 or G2.5 keeps residual unbalance to a minimum, eliminating shaft wobble, minimizing dynamic loads on support bearings, and protecting adjacent dynamic seals from friction wear.
Every batch must be shipped with an EN 10204 3.1 Mill Test Certificate (MTC), backed by non-destructive testing (NDT) logs and dimensional inspection reports to guarantee complete compliance with customer drawings.