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Spring Dowel Pins
We bring forth for our clients a broad range of Spring Dowel Pins which is used to retain parts in a fixed position or to preserve alignment. Manufactured using excellent quality materials, these pins can minimise the use of nuts and bolts. Offered in various sizes, shapes and finishes, these Spring Dowel Pins are precise in dimensions, highly efficient and offer optimum performance. Clients can buy customized Spring Dowel Pins from us in competitive prices.
Introduction: Under normal conditions a properly fitted Dowel Pin is subject to shearing strain only. Hollow Dowel Pin replaces heavy assemblies of Nut and bolts. hence it is also called as All Purpose Fasteners. Also Hollow Dowel Pins are generally called as Spring Pins.
Salient features:
- Stable locking can be attained.
- Longer service life.
- Ease of installation
- Lower maintenance cost.
- Can be installed in sync with nuts and bolts.
Dimensions
Table1 Light series pin
Table2 Heavy series dowel pin
Tolerance
The nominal diameter of sleeve is also the nominal diameter of the receiving bore. Tolerance on the receiving bore shall be H12. We recommended use of hydraulic pressure in assembling the Dowel in order to minimize damage to the receiving bore and the pin.
Material
Dowel Pins are manufactured out of Spring Steel 75 C 6 as per IS 2507 - 1975. hea-treated to 47 to 51 HRC. (Also see note)
Surface Finish
Generally all Dowels Pins are thermally blackened. We also provide Zinc and Phosphate surface protection.
Resilience and Recovery Test
Resilience and recovery shall be tested by driving the sleeve ten through a hole of nominal size, within the tolerance zone H6 in a hardened steel plate of St 60. The maximum reduction in the oversize of the diameter shall not exceed 50 percent of the oversize in delivery condition. For example, the outside diameter shall not be less than 20.25 mm on reduction from 20.5 mm for a spring dowel pin of 20mm nominal diameter.
Quality Assurance
All Dowel pins are thoroughly inspected for Dimensions like Outside Diameter, Inner Diameter, Length, Length, Thickness, Longitudinal gap, Chamfer Length and Hardness according to IS:5988, DIN 1481 or as per party's specification. Dowel are checked for resilience and recovery test in order to ensure better service life
Note
We manufacture Dowel Pins of Ø 18mm Nominal in En 45 grade. Also please note that the resilience and recovery Test is applicable to Dowell made of En 45 grade only.
Please see Table 1 and Table2 for Preferred Lengths and Tolerance of Length respectively. Any other length tolerance can be given as per party's specification. For further details contact Marketing Cel | Table 1 : Preferred Lengths | Length mm
| In steps of mm | | 4 to 6 | 1 | | 6 to 32 | 2 | | 32 to 40 | 4 | | 40 to 100 | 5 | | 100 to 200 | 20 | | Table 2 : Tolerance Lengths | Length mm
| Tolerance mm | | 4 to 10 | + 0.5 | | 12 to 50 | + 1.0 | | 50 to 200 | + 1.5 |
| Table 1: Dimensions for Spring Dowel Sleeves (Light Pattern) | | Catalogue
No. | Nominal Diameter
Mm | S | A | Before Fitting | For Bolt
Size (IS:4218
(Part VI )-
1967*)6g | Corresponding
Washer
(IS:2016-
1967**) | Preferred Length
Range from Up to and including )L | | d1. | Tol.
On d1 | d2 | | P020L | 2 | 0.2 | 0.35 | 2.3 | +0.1 | 1.9 | - | - | 4-30 | | P025L | 2.5 | 0.25 | 0.45 | 2.8 | 2.3 | - | - | 4-30 | | P030L | 3 | 0.3 | 0.5 | 3.3 | +0.2 | 2.7 | - | - | 4-40 | | P035L | 3.5 | 0.35 | 0.6 | 3.8 | 3.1 | - | - | 4-40 | | P040L | 4 | 0.5 | 0.7 | 4.4 | 3.4 | - | - | 4-50 | | P045L | 4.5 | 0.5 | 0.8 | 4.8 | 3.8 | M3 | 3.2 | 4-50 | | P050L | 5 | 0.5 | 1.6 | 5.4 | 4.4 | - | - | 5-80 | | P060L | 6 | 0.75 | 1.6 | 6.4 | +0.3 | 4.9 | M4 | 4.3 | 10-100 | | P070L | 7 | 0.75 | 1.6 | 7.5 | 6 | M5 | 5.3 | 10-100 | | P080L | 8 | 0.75 | 2 | 8.5 | 7 | M6 | 6.4 | 10-120 | | P100L | 10 | 1 | 2 | 10.5 | 8.5 | - | - | 10-160 | | P110L | 11 | 1 | 2 | 11.5 | 9.5 | M8 | 8.4 | 10-160 | | P120L | 12 | 1 | 2 | 12.5 | 10.5 | - | - | 10-180 | | P130L | 13 | 1.25 | 2 | 13.5 | 11 | M10 | 10.5 | 10-180 | | P140L | 14 | 1.5 | 2 | 14.5 | 11.5 | - | - | 10-180 | | P016L | 16 | 1.5 | 2 | 16.5 | 13.5 | M12 | 13 | 10-200 | | P180L | 18 | 1.75 | 2 | 18.5 | +0.4 | 15 | M14 | 15 | 10-200 | | P200L | 20 | 2 | 2 | 20.5 | 16.5 | - | - | 10-200 | | P210L | 21 | 2 | 2 | 21.5 | 17.5 | M16 | 17 | 14-200 | | P230L | 23 | 2 | 3 | 23.5 | 19.5 | M18 | 19 | 14-200 | | P250L | 25 | 2 | 3 | 25.5 | 21.5 | M20 | 21 | 14-200 | | P280L | 28 | 2.5 | 3 | 28.5 | 23.5 | M22 | 23 | 14-200 | | P300L | 30 | 2.5 | 3 | 30.5 | 25.5 | M24 | 25 | 14-200 | | P350L | 35 | 3.5 | 3 | 35.5 | 28.5 | M27 | 28 | 20-200 | | P400L | 40 | 4 | 4 | 40.5 | 32.5 | M30 | 31 | 20-200 | | P450L | 45 | 4 | 4 | 45.5 | 37.5 | M36 | 37 | 20-200 | | P500L | 50 | 5 | 4 | 50.5 | 40.5 | M39 | 40 | 20-200 |
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