{"id":1001,"date":"2026-04-29T08:53:55","date_gmt":"2026-04-29T08:53:55","guid":{"rendered":"https:\/\/splined-shaft.net\/product\/serrated-splined-shafts\/"},"modified":"2026-04-29T08:53:56","modified_gmt":"2026-04-29T08:53:56","slug":"serrated-splined-shafts","status":"publish","type":"product","link":"https:\/\/splined-shaft.net\/zh\/product\/serrated-splined-shafts\/","title":{"rendered":"Serrated Splined Shafts"},"content":{"rendered":"
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Precision Connection Components<\/div>\n

Serrated Splined Shafts \u2013 Compact Torque Transfer for Demanding Australian Equipment<\/h2>\n

Triangular spline profiles deliver the highest tooth count per millimetre of any spline form. Ideal for press-fit shaft connections, instrumentation drives and small-diameter applications where a parallel or involute spline would not fit.<\/p>\n<\/div>\n\n\n
\"Serrated<\/td>\n\"DIN<\/td>\n<\/tr>\n<\/table>\n

Sometimes called toothed shafts, V-spline shafts or knurled splines, serrated splined shafts use a 60\u00b0 or 90\u00b0 tooth flank angle to create a high tooth count on small-diameter shafts. The triangular profile generates a press-fit grip when assembled with the mating hub, eliminating the need for keys, pins or separate locking devices.<\/p>\n

Ever-power manufactures serrated splined shafts to DIN 5481 (60\u00b0), SAE J499 (45\u00b0 and 60\u00b0), ISO 5480 and customer-supplied profiles for Australian customers across instrumentation, automotive accessory drives, electric motor shaft adaptors and precision tooling assemblies.<\/p>\n

Standard Reference Chart<\/h2>\n
\n\n\n\n\n\n\n\n\n\n
Standard<\/th>\nTooth Angle<\/th>\nDiameter Range<\/th>\nCommon Use<\/th>\n<\/tr>\n<\/thead>\n
DIN 5481<\/td>\n60\u00b0<\/td>\n\u00d87 mm \u2013 \u00d860 mm<\/td>\nSteering columns, levers, knobs, control linkages<\/td>\n<\/tr>\n
SAE J499<\/td>\n45\u00b0, 60\u00b0<\/td>\n\u00d83 mm \u2013 \u00d832 mm<\/td>\nAutomotive accessories, alternator pulleys<\/td>\n<\/tr>\n
ISO 5480<\/td>\n60\u00b0<\/td>\n\u00d86 mm \u2013 \u00d850 mm<\/td>\nEuropean automotive sub-assemblies<\/td>\n<\/tr>\n
ANSI B92.2M<\/td>\n45\u00b0<\/td>\n\u00d85 mm \u2013 \u00d840 mm<\/td>\nNorth American instrumentation<\/td>\n<\/tr>\n
JIS B 1602<\/td>\n60\u00b0, 90\u00b0<\/td>\n\u00d86 mm \u2013 \u00d836 mm<\/td>\nJapanese OEM equipment, motorcycles<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Why Serrated Splines Solve Specific Engineering Problems<\/h2>\n\n\n\n
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Maximum Tooth Count, Minimum Diameter<\/h3>\n

A 12 mm shaft can carry 36 serrations versus only 6 parallel splines, dramatically reducing per-tooth contact stress and enabling reliable torque transfer at small diameters where parallel splines would fail.<\/p>\n<\/td>\n

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Permanent Press-Fit Connection<\/h3>\n

Press-fitting a hardened serrated shaft into a softer hub causes the male teeth to plough into the bore, creating a near-permanent bond rated for full shaft torque without keys or set screws.<\/p>\n<\/td>\n<\/tr>\n

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Angular Adjustment<\/h3>\n

High tooth count gives finer angular indexing \u2013 a 36-tooth serration allows lever or pointer position adjustment in 10\u00b0 increments, useful for steering tilt mechanisms and instrument panels.<\/p>\n<\/td>\n

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Cost-Effective for High Volumes<\/h3>\n

Cold-rolling production of serrations is significantly cheaper than hobbing involute splines, making serrated shafts the economical choice for automotive accessory drives produced in millions.<\/p>\n<\/td>\n<\/tr>\n<\/table>\n

Manufacturing Specifications<\/h2>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Parameter<\/th>\nRange \/ Capability<\/th>\n<\/tr>\n<\/thead>\n
Tooth flank angle<\/td>\n45\u00b0, 60\u00b0, 90\u00b0 (standard); custom on request<\/td>\n<\/tr>\n
Production methods<\/td>\nCold rolling, hobbing, broaching, knurling<\/td>\n<\/tr>\n
Tooth count<\/td>\n12 \u2013 60 teeth<\/td>\n<\/tr>\n
Diameter range<\/td>\n\u00d83 mm to \u00d880 mm<\/td>\n<\/tr>\n
Length capacity<\/td>\nUp to 1,500 mm<\/td>\n<\/tr>\n
Material grades<\/td>\n1018, 1045, 4140, 12L14, 304\/316 stainless, brass C36000<\/td>\n<\/tr>\n
Tolerance grade<\/td>\nIT7 to IT10 over major diameter<\/td>\n<\/tr>\n
Surface finish<\/td>\nRa 0.8 to Ra 3.2 \u00b5m<\/td>\n<\/tr>\n
Hardness<\/td>\nHRB 80\u201395 (soft) \/ HRC 45\u201358 (hardened)<\/td>\n<\/tr>\n
Surface treatment<\/td>\nZinc plating, nickel, black oxide, electroless Ni, passivation<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Where Serrated Splined Shafts Earn Their Keep<\/h2>\n\n\n\n
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Steering Columns<\/h3>\n

Tilt and adjustment mechanisms<\/p>\n<\/td>\n

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Electric Motors<\/h3>\n

Output shaft adaptors, gear motor pinions<\/p>\n<\/td>\n

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<\/div>\n

Instrumentation<\/h3>\n

Potentiometers, encoders, gauges<\/p>\n<\/td>\n

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<\/div>\n

Wheel Hubs<\/h3>\n

Pulleys, sprockets, hand wheels<\/p>\n<\/td>\n<\/tr>\n

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Hand Tools<\/h3>\n

Ratchet drives, torque tools, sockets<\/p>\n<\/td>\n

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<\/div>\n

Appliances<\/h3>\n

Whitegoods knob shafts, timers, valves<\/p>\n<\/td>\n

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<\/div>\n

Medical Devices<\/h3>\n

Surgical hand pieces, dental instruments<\/p>\n<\/td>\n

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\u2708\ufe0f<\/div>\n

Aerospace Auxiliary<\/h3>\n

Cockpit controls, actuator linkages<\/p>\n<\/td>\n<\/tr>\n<\/table>\n

Cold-Forming vs Cutting \u2013 How We Choose<\/h2>\n\n\n
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Cold Rolling (Preferred for High Volume)<\/h3>\n

Cold-rolled serrations work-harden the tooth surface to HRB 95+, eliminate post-machine grinding, and produce zero swarf. Cycle time per shaft: 4\u20138 seconds. Ideal for runs of 10,000+ pieces.<\/p>\n

Best for: Automotive accessory drives, motor shafts, fastener stems<\/p>\n<\/td>\n

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Hobbing or Broaching (Preferred for Low Volume)<\/h3>\n

CNC hobbing or push-broaching cuts serrations to closer tolerance (IT7) and accommodates non-standard angles or stepped diameters. Cycle time: 2\u20134 minutes per shaft.<\/p>\n

Best for: Prototypes, replacement service, custom geometries<\/p>\n<\/td>\n<\/tr>\n<\/table>\n

Why Australian Engineers Trust Ever-power<\/h2>\n\n\n\n\n\n
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22 Years of Spline-Specific Manufacturing<\/h3>\n

Established 2003, supplying 38 countries with documented PPM defect rate below 250. Splined shafts are not a sideline \u2013 they are our business.<\/p>\n<\/td>\n<\/tr>\n

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IATF 16949, ISO 9001, ISO 14001 Certified<\/h3>\n

Audit-ready quality system with PPAP submission capability, dedicated quality plans per part number, and full PPF traceability.<\/p>\n<\/td>\n<\/tr>\n

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Specialised Cold-Forming Cells<\/h3>\n

Six dedicated cold-rolling machines for serrations alone, capable of producing 24,000 shafts per shift on standard tooling sizes.<\/p>\n<\/td>\n<\/tr>\n

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Tooling Library of 2,400+ Profiles<\/h3>\n

Most DIN 5481, SAE J499 and JIS B 1602 sizes are already tooled, eliminating tooling lead time on common standard parts.<\/p>\n<\/td>\n<\/tr>\n<\/table>\n

Australian Project Snapshots<\/h2>\n\n\n
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Case Study 01<\/div>\n

Adelaide Automotive Accessory Manufacturer<\/h3>\n

A South Australian aftermarket alternator pulley assembler converted from imported European serrated shafts to Ever-power 12 mm DIN 5481 shafts in 1045 cold-rolled. Annual cost saving exceeded AUD 168,000 across 95,000 units, with field-failure rate dropping from 0.8 percent to 0.04 percent.<\/p>\n

Specification: DIN 5481 12\u00d714, 60\u00b0 flank, zinc plated<\/p>\n<\/td>\n

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Case Study 02<\/div>\n

Melbourne Medical Device OEM<\/h3>\n

A Victorian dental hand-piece manufacturer required 6 mm serrated drive shafts in 316L stainless with passivation, ISO 13485 documentation and lot traceability. Ever-power delivered the first 2,000 piece run in 22 days, including ISO Class 7 cleanroom packaging.<\/p>\n

Specification: Custom 6\u00d70.4\u00d730, 60\u00b0 flank, 316L stainless<\/p>\n<\/td>\n<\/tr>\n<\/table>\n

Frequently Asked Questions<\/h2>\n
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\nWhat is the difference between a serrated spline and a knurled shaft?<\/summary>\n

A serrated spline is a precision-engineered tooth profile to a recognised standard (DIN 5481, SAE J499) with controlled tooth depth, angle and tolerance. Knurling is a surface-roughening process producing a decorative grip pattern \u2013 it does not transmit reliable torque.<\/p>\n<\/details>\n

\nWhen do I use a 60\u00b0 angle versus a 45\u00b0 angle?<\/summary>\n

60\u00b0 is the European default (DIN 5481) producing a stronger tooth root \u2013 preferred for press-fit hub connections. 45\u00b0 (SAE J499 fine series) gives finer angular indexing and is common in North American automotive electrical accessories.<\/p>\n<\/details>\n

\nCan serrated splines be heat treated after rolling?<\/summary>\n

Yes. We offer induction hardening, carburising and gas nitriding on cold-rolled serrated shafts. For precision applications, we recommend post-heat-treatment dimensional inspection because tooth profile may shift slightly during quenching.<\/p>\n<\/details>\n

\nWhat is the minimum order quantity?<\/summary>\n

For prototypes, MOQ is 1 piece. Production minimum on custom profiles is 100 pieces, or 50 pieces for standard sizes already tooled in our library. Cold-rolled volume orders begin from 1,000 pieces with significantly lower unit pricing.<\/p>\n<\/details>\n

\nCan you produce stainless serrated shafts for medical or food applications?<\/summary>\n

Yes. We routinely produce 304, 316 and 316L serrated shafts with passivation per ASTM A967, and 17-4PH for higher strength. Material certificates and biocompatibility documentation provided where required.<\/p>\n<\/details>\n

\nHow do you specify the press-fit interference?<\/summary>\n

Standard interference is 0.05\u20130.15 mm on the major diameter for a press-fit assembly into a softer hub. We can custom-grind to your specified press-fit tolerance based on your hub material and assembly equipment.<\/p>\n<\/details>\n

\nDo your serrated shafts comply with REACH and RoHS?<\/summary>\n

Yes. All standard surface treatments (zinc, nickel, black oxide, electroless nickel) are RoHS 3 compliant. REACH SVHC declarations are issued on request for European-bound automotive parts shipped via Australia.<\/p>\n<\/details>\n<\/div>\n

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Send Us Your Serrated Spline Drawing<\/h2>\n

Whether you need 50 prototypes or 50,000 production pieces, we will respond within one Australian business day with pricing, lead time and material recommendations.<\/p>\n

sales@splined-shaft.net<\/a>Get a Custom Quote<\/a>About Our Facility<\/a><\/div>\n

Explore other spline types on our main catalogue page<\/a>.<\/p>\n<\/div>\n