Shaft diameter 3-25 mm ・ Cylindrical dustproof type for composite loads ・ Premium alloy steel (SCM440/SUJ2) ・ 8 surface treatment options
- Product Specification
- Product Characteristics
- Why you must choose HEADWAY
Product Specifications: Explanation of Nominal Model Codes
When purchasing or customizing a pre-matched ball spline set, the coding rules for the nominal code are as follows:
Selection Example: KST 010 T2 N S 500 P1 - B2
- KST: Spline outer cylinder type (Cylinder dustproof type)
- 010: Nominal shaft diameter (Unit: mm)
- T2: Number of ball rows (T2 for 2 rows / T3 for 3 rows)
- N: Spline shaft accuracy (Q: Economy / N: Normal grade / H: High grade / P: Precision grade / SP: Super precision grade / UP: Ultra precision grade)
- S: Spline shaft type (S: Solid spline shaft / K: Standard hollow spline shaft)
- 500: Spline shaft length (Unit: mm)
- P1: Preload grade (P0: With clearance / P1: No preload / P2: Light preload / P3: Medium preload)
- B2: Number of outer cylinders (Omitted if 1; marked as B2 for 2)
Technical Parameters and Dimensions Specification Table
The following are the detailed parameters of mechanical characteristics, load capacities, and weights for each model of the KST series (including standard type and L-extended type):
| Nominal Model | Torque Ct (N·m) | Static Torque C0t (N·m) | Dynamic Load C (kN) | Static Load C0 (kN) | Static Permissible Moment M01 (N·m) | Static Permissible Moment M02 (N·m) | Outer Cylinder Weight (g) | Shaft Weight (kg/m) |
|---|---|---|---|---|---|---|---|---|
| KST 03T2 | 0.45 | 0.51 | 0.251 | 0.285 | 0.31 | 1.9 | 2.1 | 0.055 |
| KST 04T2 | 0.7 | 0.87 | 0.303 | 0.38 | 0.52 | 2.9 | 2.5 | 0.096 |
| KST L04T2 | 1 | 1.5 | 0.441 | 0.665 | 1.5 | 8.6 | 4.1 | 0.096 |
| KST 05T2 | 1.8 | 1.9 | 0.587 | 0.641 | 1.01 | 7.9 | 4.8 | 0.149 |
| KST L05T2 | 2.6 | 3.5 | 0.879 | 1.18 | 3.2 | 19.3 | 8.1 | 0.149 |
| KST 06T2 | 2.5 | 3.01 | 0.855 | 0.711 | 1.7 | 11.7 | 8.9 | 0.19 |
| KST 06T3 | 3.5 | 4.2 | 1.36 | 1.2 | 3 | 20.3 | 8.55 | 0.17 |
| KST L06T2 | 3.6 | 5.2 | 1.5 | 1.03 | 5 | 27.6 | 14.5 | 0.19 |
| KST L06T3 | 5.02 | 7.2 | 1.65 | 2.4 | 8.6 | 47.8 | 13.9 | 0.17 |
| KST 08T2 | 5.5 | 6.2 | 1.19 | 1.33 | 3.3 | 22.1 | 15.9 | 0.39 |
| KST 08T3 | 7.7 | 8.6 | 1.9 | 2.1 | 5.6 | 38.1 | 15.25 | 0.36 |
| KST L08T2 | 8.4 | 11.5 | 1.8 | 2.47 | 10.3 | 56.3 | 26.5 | 0.39 |
| KST L08T3 | 11.7 | 15.8 | 2.88 | 3.9 | 17.8 | 97.5 | 25.44 | 0.36 |
| KST 10T2 | 10.88 | 12.45 | 1.88 | 2.15 | 7.02 | 41.5 | 31.5 | 0.6 |
| KST 10T3 | 15.23 | 18.5 | 3.2 | 3.45 | 12.1 | 71.9 | 30.2 | 0.26 |
| KST L10T2 | 16.6 | 23.4 | 4.04 | 2.85 | 22.7 | 115 | 56.5 | 0.6 |
| KST L10T3 | 23.2 | 35.12 | 6.5 | 4.85 | 39.3 | 200 | 55.7 | 0.26 |
| KST 12T2 | 14.8 | 18.32 | 2.69 | 2.18 | 10.6 | 59.1 | 44 | 0.88 |
| KST 12T3 | 20.7 | 25.65 | 4.3 | 3.5 | 18.3 | 102 | 42.3 | 0.85 |
| KST 15T2 | 31.26 | 45.58 | 6.08 | 4.18 | 27.8 | 152 | 59.5 | 1.11 |
| KST 15T3 | 43.78 | 63.8 | 9.73 | 6.6 | 33.2 | 181 | 57.1 | 1.03 |
| KST 20T2 | 65.96 | 90.4 | 9.04 | 6.6 | 48.6 | 288 | 130 | 2.02 |
| KST 20T3 | 92.4 | 126.65 | 10.6 | 14.5 | 58 | 343 | 124 | 1.86 |
| KST 25T2 | 141 | 178 | 14.2 | 11.1 | 83.52 | 496 | 220 | 3.12 |
| KST 25T3 | 197.5 | 249.2 | 22.7 | 17.8 | 110.6 | 656 | 212 | 2.88 |
Note: The load parameter baseline conversion in the table is 1 kN ≈ 102 kgf and 1 N·m ≈ 0.102 kgf·m.
- Cylinder Dustproof Design: The KST series belongs to the cylinder dustproof type ball splines, featuring a compact outer cylinder structure equipped with dust seals and circulators.
- High Load Capacity and High Rigidity: The ball rolling grooves of the outer cylinder are precision-ground and shaped with a Gothic 40° contact angle design. Under a large contact angle, it can withstand extremely high combined loads in both radial and torque directions, providing excellent torque and moment rigidity.
- Zero-Backlash Transmission: By adjusting the preload method, the backlash in the rotational direction can be completely eliminated (achieving zero backlash), allowing the equipment to maintain precise indexing even under frequent forward and reverse operations.
- High Speed and High Productivity: Featuring high sensitivity and effectively reducing energy waste, it can efficiently suppress vibrations and shocks during high-speed operation, making it a powerful transmission tool for achieving high-speed and high-productivity upgrades in equipment.
- Compact and Space-Saving: Under the same shaft diameter, the rated load that a ball spline can withstand is more than ten times that of a conventional linear ball bushing. Therefore, it can replace complex mechanism designs and significantly reduce equipment installation space.
- High-Quality Materials and Ultimate Wear Resistance: The shaft body and outer cylinder are selected from high-grade alloy steel (such as SCM440 / SUJ2). After professional heat treatment and quenching, the surface hardness reaches up to HRC58~62, ensuring ultimate wear resistance and durability during long-term operation.
- Flexible Shaft Combinations: S-type precision solid spline shafts or K-type standard hollow spline shafts can be selected according to requirements. Hollow spline shafts are suitable for applications requiring piping, wiring, exhausting, or aiming for equipment weight reduction.
- Simple Assembly without Ball Fall-out: The outer cylinder adopts a special anti-drop design. Even if the spline outer cylinder is removed from the spline shaft, the steel balls will not fall out, allowing the assembly, inspection, and maintenance of the equipment to be carried out with ease.
HEADWAY presents you with superior quality, firm commitment, and a spirit of partnership. As a manufacturer of automation and mold components, we possess deep knowledge of automation and mold technology, continuously innovating and improving to ensure outstanding performance and reliability.
On the official HEADWAY website, you can not only browse product catalogs but also understand that each product represents our commitment to quality and our responsiveness to customer needs. We rigorously control the manufacturing process, utilizing high-quality materials and precision machining to ensure that every product meets your expectations.
(1).Streamlined Production
(2).No minimum order quantity, we can produce even one.
(3).100% inspection - From production to inspection equipment, all steps are completed by HEADWAY.
(4).Accept custom processing inquiries based on provided drawings.
(5).For product issues and subsequent after-sales service, we provide personalized assistance for you.
