A straight sided spline is a mechanical connection characterized by parallel, flat sides on the teeth (or grooves) that interlock to transfer torque. Unlike involute splines, which have curved teeth, straight-sided splines are simpler in geometry and are commonly used for sliding and non-rotating applications.
straight sided spline Detail
| Product Name | Straight Sided Spline |
| Product Material | Core material: 45 steel has good comprehensive performance and low cost, and is suitable for medium and low speed and medium load; alloy structural steel such as 40Cr, 20CrMnTi, 42CrMo has better strength and fatigue resistance, and is used for heavy load or impact conditions. |
| Product Process | Spline processing generally starts with turning the shaft blank on a lathe, and then milling or grinding the key teeth. If the material needs to be strengthened, it needs to be tempered, surface hardened and other heat treatments, and finally the outer circle and key side are finely ground. |
| Surface Treatment | Options include quenching, coating andphosphating |
| Customizable Products | Gears / Sprockets / Worms / Shafts / Rack Bars / Bevel Gears, etc. |
Product Advantages
High centering accuracy
rectangular, and strong transmission stability
suitable for heavy load conditions
Large load-bearing capacity,avoiding wear or breakage
technology is mature and the cost is low
Easy to repair and replace and suitable for large-scale industrial applications
Easy to assemble and wide applicability
Dynamic connection or adjustment
Product Information Parameters
In addition to standard sizes,GRANGIN also focuses on custom parts. It has an absolute advantage in the field of custom parts,
Meet almost all application requirements and the most stringent specifications.
| Specifications | Nominal shaft diameter d |
D | L | MAX L | b | t | I | d | Basic rated torque | Basic rated load | ||
| Dynamic torque C1 | Static torque Cor | Rated dynamic load | Rated static load | |||||||||
| S-GJZA15 | 15 | 23 0-0.013 |
50 0-0.3 |
400 | 3.5H8 | 2 0-0.3 |
20 | 2 | 38.9 | 105.9 | 5.5 | 13.3 |
| S-GJZA20 | 20 | 30 0-0.013 |
60 0-0.3 |
600 | 4H8 | 2.5 +0.10 |
26 | 3 | 100 | 270.5 | 10.719 | 25.499 |
| S-GJZA25 | 25 | 38 0-0.016 |
70 0-0.3 |
800 | 5H8 | 3 +0.20 |
36 | 3 | 152.0 | 345.0 | 13 | 26 |
| S-GJZA30 | 30 | 45 0-0.016 |
80 0-0.3 |
1400 | 4H8 | 3 +0.20 |
26 | 3 | 192.2 | 425.8 | 16.3 | 33.1 |
| S-GJZA32 | 32 | 48 0-0.016 |
80 0-0.3 |
1400 | 8H8 | 4 +0.20 |
40 | 3 | 288.9 | 613.2 | 19.3 | 36.1 |
| S-GJZA40 | 40 | 60 0-0.019 |
100 0-0.3 |
1500 | 10H8 | 5 +0.20 |
56 | 4 | 651.9 | 1390.9 | 34.9 | 65.5 |
| S ·GJZA50 | 50 | 75 0-0.019 |
112 0-0.3 |
1500 | 14H8 | 5.5 +0.20 |
60 | 4 | 1048.0 | 2200.7 | 44.9 | 82.9 |
| S-GJZA60 | 60 | 90 0-0.022 |
127 0-0.3 |
1500 | 16H8 | 6 +0.20 |
70 | 4 | 2135.9 | 4172.9 | 76.2 | 131.1 |
| S-GJZA70 | 70 | 100 0-0.022 |
135 0-0.3 |
1700 | 18H8 | 6 +0.10 |
68 | 4 | 3153.4 | 5797.6 | 96.5 | 156.1 |
| S-GJZA85 | 85 | 120 0-0.022 |
155 0-0.3 |
1900 | 20H8 | 7 +0.10 |
80 | 5 | 4437.2 | 8082.0 | 111.8 | 179.2 |
| S-GJZA100 | 100 | 140 0-0.025 |
175 0-0.4 |
1900 | 28H8 | 9 +0.10 |
93 | 5 | 6943.8 | 11737.2 | 148.7 | 221.3 |
| S-GJZA120 | 120 | 160 0-0.025 |
200 0-0.4 |
1900 | 28H8 | 9 +0.10 |
123 | 6 | 10153.5 | 18779.5 | 181.3 | 295 |
| S-GJZA150 | 150 | 205 0-0.029 |
250 0-0.4 |
1900 | 32H8 | 10 +0.10 |
157 | 6 | 19564.1 | 33532.7 | 279.4 | 421.5 |
20+ years of experience as straight sided spline manufacturer
Specialized in designing, producing and processing various specifications of synchronous wheels, gears, sprockets, racks,
couplings and other transmission accessories
Semi-Finished Parts Pictures:
Packaging Pictures：
Our Certificate
CE
ISO9001
ISO45001
ISO14001
Related popular products
What are the different types of spline shafts?
There are numerous types of spline shafts, including, involute splines, which have short, curved, and evenly spaced teeth; parallel splines, which are short, straight sided splines; serrated splines, which are V shaped; and helical splines, which are built for optimal load sharing.
What are the advantages of straight side splines in high-speed transmission?
In high-speed transmission, straight-side splines need to take advantage of their structure through precision machining, material strengthening, lubrication optimization and dynamic balance design, while avoiding risks such as stress concentration, vibration and thermal deformation. In actual applications, targeted design should be carried out in combination with operating parameters (speed, load, ambient temperature), and reliability should be verified through bench tests.
What is a straight side splines?
Straight-side splines have become one of the most commonly used spline types in mechanical transmission due to their simple and reliable structure and economical processing cost. When designing, it is necessary to select appropriate size parameters and centering methods according to specific working conditions (speed, load, environment) to balance performance and cost.
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