Product parameters
Product name: Grinding hob
Product material: High-speed steel M2
Grade: Grade A
Product packaging: Paper box
Product specifications: See the table below
Unit: One piece
Grinding gear hob (enterprise standard)
1. Application: Gear hobs are used for pre-grinding of gears with tooth profiles that conform to the basic rack tooth profile of GB/T1356-1978 standard.
2. Features and precision: The hob structure is single-head, right-handed or left-handed, with axial straight grooves, a top edge rake angle of 7°, no convex angle, and a precision grade of C.
Compared with gear hobs manufactured according to GB/T6084, it is slightly lower than the C grade of GB/T6084.
3. Tool marking and examples
Please specify when ordering: product name, product number, module, and direction of rotation.
Example: Gear hob 25130-029. m2 left
2. Features and precision: The hob structure is single-head, right-handed or left-handed, with axial straight grooves, a top edge rake angle of 7°, no convex angle, and a precision grade of C.
Compared with gear hobs manufactured according to GB/T6084, it is slightly lower than the C grade of GB/T6084.
3. Tool marking and examples
Please specify when ordering: product name, product number, module, and direction of rotation.
Example: Gear hob 25130-029. m2 left
4. Specifications and main size parameters
Unit: mm
| Product number |
Module m |
Outer diameter de |
Total length L |
Aperture D |
|
|---|---|---|---|---|---|
| Right Rotation | Left Rotation | ||||
| 25120-025 | 25130-025 | 1 | 50 | 40 | 22 |
| 026 | 026 | 1.25 | 50 | 40 | 22 |
| 027 | 027 | 1.5 | 55 | 45 | 22 |
| 25120-028 | 25130-028 | 1.75 | 55 | 50 | 22 |
| 029 | 029 | 2 | 65 | 60 | 27 |
| 030 | 030 | 2.25 | 65 | 65 | 27 |
| 031 | 031 | 2.5 | 70 | 70 | 27 |
| 032 | 032 | 2.75 | 70 | 70 | 27 |
| 033 | 033 | 3 | 80 | 80 | 32 |
| 034 | 034 | 3.25 | 80 | 80 | 32 |
| 035 | 035 | 3.5 | 85 | 85 | 32 |
| 036 | 036 | 3.75 | 90 | 90 | 32 |
| 037 | 037 | 4 | 90 | 90 | 32 |
| 038 | 038 | 4.5 | 95 | 95 | 32 |
| 039 | 039 | 5 | 100 | 100 | 32 |
| 040 | 040 | 5.5 | 100 | 100 | 32 |
| 041 | 041 | 6 | 105 | 105 | 32 |
| 042 | 042 | 6.5 | 110 | 100 | 32 |
| 043 | 043 | 7 | 115 | 115 | 32 |
| 044 | 044 | 8 | 125 | 125 | 32 |
| 045 | 045 | 9 | 140 | 140 | 40 |
| 046 | 046 | 10 | 150 | 150 | 40 |
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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