Spring Alignment - Dowels - Bushings Specs

Dowel bushings are used to locate components in conjunction with bolts which pass through the inside of the bushing after it has been installed. Separate holes for locating pins are eliminated. The hardened bushings also absorb shear loads, isolating the bolts from these forces.

Spring alignment dowels are used to accurately locate components with respect to each other. They are formed around arbors to assure roundness. It is recommended that one half the hole tolerance be used for the fixed location of the dowel and one half for the hole in the mating part.

The chamfer on dowel bushings and spring dowels is designed to facilitate insertion into minimum specified holes.

Series DB100 - Dowel Bushings

INCH
Bolt Size	Recommended Hole Dia.		O.D.		Wall Thickness	Min. Single Shear	Length
	Min.	Max.	Min.	Max.			.375 3/8	.500 1/2	.750 3/4	1.000 1	1.250 1-1/4	1.500 1-1/2
#10	.250	.255	.260	.270	.022	1,660 lbs
.250 1/4	.313	.318	.323	.333	.028	2,670 lbs.
.313 5/16	.391	.396	.401	.411	.035	4,200 lbs.
.375 3/8	.469	.474	.479	.489	.042	6,070 lbs.
.500 1/2	.625	.630	.635	.645	.057	11,050 lbs.

 

 

 

 

 

 

Length Tolerance + .000" - .030"

METRIC
Bolt Size	Recommended Hole Dia.		O.D.		Wall Thickness	Min. Single Shear	Length
	Min.	Max.	Min.	Max.			10 mm	13 mm	19 mm	25 mm	32 mm	38 mm
5 mm	6.35	6.48	6.60	6.86	0.56	7.4 kN
6 mm	7.67	7.80	7.92	8.18	0.71	11.4 kN
8 mm	9.93	10.06	10.18	10.44	0.89	18.7 kN
10 mm	12.50	12.63	12.75	13.01	1.07	28.5 kN
12 mm	15.09	15.22	15.34	15.60	1.45	46.5 kN

 

 

 

 

 

 

Length Tolerance + 0.0 mm - 1.0 mm

Series SD 200 - Spring Dowels

INCH
Bolt Size	Recommended Hole Dia.		O.D.		Wall Thickness	Min. Single Shear	Length
	Min.	Max.	Min.	Max.			.375 3/8	.500 1/2	.750 3/4	1.000 1	1.250 1-1/4	1.500 1-1/2
.250 1/4	.250	.255	.260	.270	.022	1,660 lbs
.313 5/16	.313	.318	.323	.333	.028	2,670 lbs.
.375 3/8	.375	.380	.385	.395	.035	4,000 lbs.
.500 1/2	.500	.505	.510	.520	.042	6,530 lbs.
.625 5/8	.625	.630	.635	.645	.057	11,050 lbs.

 

 

 

 

 

 

 

Length Tolerance + .000" - .030"

METRIC
Bolt Size	Recommended Hole Dia.		O.D.		Wall Thickness	Min. Single Shear	Length
	Min.	Max.	Min.	Max.			10 mm	13 mm	19 mm	25 mm	32 mm	38 mm
6 mm	6.00	6.13	6.25	6.50	0.56	6.9 kN
8 mm	8.00	8.13	8.25	8.50	0.71	11.9 kN
10 mm	10.00	10.13	10.25	10.50	0.89	18.9 kN
12 mm	12.00	12.13	12.25	12.50	1.07	27.2 kN
16 mm	16.00	16.13	16.25	16.50	1.45	49.6 kN

 

 

 

 

Length Tolerance + 0.0 mm - 1.0 mm

Note: .760" size does not require a staggered seam pattern to prevent interlocking. Larger and special diameters are available upon request.Part Number: Product Type, Size x Length, Material, Finish, Series
Examples: BUSH .250 x .500 BK DB100 - BUSH 10 x 20 BT DB100 - BUSH .500 x .125 BK SD200 - BUSH 10 x 20 BR SD200