Product parameters
Product name: Involute spline hobs
Product material: High-speed steel M2
Grade: Grade A
Product packaging: Paper box
Product specifications: See the table below
Unit: One piece
Involute spline hob (enterprise standard) (α =30°)
1. Application: Involute spline hobs are used to process involute spline teeth with flat tooth root and centering according to the involute tooth shape in GB/T1104-1972.
2. Features and precision: The hob is made of single head, right-handed, straight groove between the shaft, and zero-degree rake angle. The hob is divided into two precision grades, A and B.
3. Tool marking and examples
Please specify the name, product number, module, pressure angle, and precision grade when ordering.
Example: Involute spline hob 25202-003 ml α30° A
2. Features and precision: The hob is made of single head, right-handed, straight groove between the shaft, and zero-degree rake angle. The hob is divided into two precision grades, A and B.
3. Tool marking and examples
Please specify the name, product number, module, pressure angle, and precision grade when ordering.
Example: Involute spline hob 25202-003 ml α30° A
4. Specifications and main size parameters
Unit: mm
| Product number | Module m | Outer diameter de | Total length L | Aperture D |
|---|---|---|---|---|
| 25202-003 | 1 | 50 | 40 | 22 |
| 4 | 1.25 | 50 | ||
| 5 | 1.5 | |||
| 6 | 2 | 60 | 60 | 27 |
| 7 | 2.5 | |||
| 8 | 3 | 70 | 70 | |
| 9 | 3.5 | |||
| 10 | 4 | 80 | 80 | 32 |
| 11 | 5 | 90 | 90 | |
| 12 | 6 | 100 | 100 | |
| 13 | 8 | 110 | 110 | 40 |
| 14 | 10 | 140 | 140 |
Involute spline hob (enterprise standard) (α =40°)
1. Application: Involute spline hobs (triangular spline hobs) are used to process cylindrical spur involute spline shafts centered according to the involute tooth profile in GB/T1145-1974.
2. Features and precision: Hobs are made into single-head, right-handed, axial straight grooves, and zero-degree rake angles. Hob precision is Class A.
3. Tool marking and examples
Please specify when ordering: product name, product number, module, pressure angle.
Example: Involute spline hob 25203-005 ml α 45°
2. Features and precision: Hobs are made into single-head, right-handed, axial straight grooves, and zero-degree rake angles. Hob precision is Class A.
3. Tool marking and examples
Please specify when ordering: product name, product number, module, pressure angle.
Example: Involute spline hob 25203-005 ml α 45°
4. Specifications and main size parameters
Unit: mm
| Product number | Module m | Outer diameter de |
Total length L |
Aperture D |
|---|---|---|---|---|
| 25203-005 | 1 | 50 | 40 | 22 |
| 006 | (1.25) | 50 | ||
| 007 | 1.5 | |||
| 008 | 2 | 60 | 60 | 27 |
Returns Policy
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Shipping
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
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