Inch Twin-Lead Screw Assemblies - NOOK INDUSTRIES - (Version JPG) - PDF Catalogue | Technical Documentation

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ACME SCREW ASSEMBLIES

twin-lead acme screw assemblies

lew

PRECIGION ACME SCREW ASSEMBLIES

Twin-lead acme screws offer dual opposing motion using a single drive system. These one-piece high performance acme screws are made from high alloy steel that is black oxided for protection. Twin-lead acme screw assemblies can be assembled with Nook PowerAc™ acme nuts, flanges and EZZE-MOUNT™ (see page 212-213) bearing supports to form cost effective systems. Twin-lead acme screws can be used in molding machines, packaging equipment, food processing machinery, robotics, material handling equipment, tire manufacturing and assembly applications.

• Lead accuracy of 0.004"/foot

• For 0.002"/foot lead accuracy contact Nook Industries customer service. 800-321-7800

Twin-Lead screws are stocked for immediate delivery without machined ends in the sizes and are highlighted in the chart below. To order a twin-lead cut to a custom length and/or with machined ends, select a size from the Twin-Lead Chart, determine OAL, LH and RH thread length, nut, flange and, if required, EZZE-MOUNT™ bearing support.

Consult the Twin-Lead Reference Number System on the next page to complete your part number.

g A

I—

CO LU

GÛ LU

S S

LU OC

A A

oal

rh thread side

lh thread side

incomplete thread

** Consult chart for incomplete thread length

Measurements in inches Stock Sizes highlighted in BLUE


screw size dia-lead	root dia. (min)	max overall length	max useable lh & rh thread	incomplete overlapping thread length	page	screw size dia-lead	root dia. (min)	max overall length	max useable lh & rh thread	incomplete overlapping thread length	page
i/4- 16	.162	36	17.25	1.50	18	1¹/8- 5	.875	72	34.25	3.50	28
3/8 - 6	.263	36	17.00	2.00	21	11/4- 4	.947	144	70.25	3.50	29
3/8 - 12	.263	36	17.00	1.50	21	11/4- 5	.999	144	70.25	3.50	29
1/2- 10	.359	36	17.00	2.00	23	11/2- 2	1.196	144	70.25	3.50	30
5/8 - 22/3	.457	36	16.75	2.50	24	11/2- 22/3	1.066	144	70.00	4.00	30
5/8- 5	.377	36	16.75	2.50	24	11/2- 4	1.196	144	70.00	3.50	30
⁵/8- 8	.457	36	16.50	2.00	24	11/2- 5	1.249	144	70.25	3.50	30
3/4- 3	.537	72	34.50	3.00	25	11/2- 10	1.355	144	70.50	2.50	30
3/4- 5	.502	72	34.50	3.00	25	13/4- 4	1.427	144	70.00	4.00	31
3/4- 6	.537	72	34.50	3.00	25	2 - 2	1.410	144	69.50	6.00	32
3/4- 10	.608	72	34.50	2.50	25	2 - 4	1.694	144	70.00	4.00	32
7/8- 6	.661	72	34.50	3.00	26	2 - 5	1.747	144	70.00	3.50	32
1 - 1	.906	72	34.50	3.00	27	21/4 - 2	1.684	144	69.00	6.00	33
1 - 2	.698	72	34.25	3.50	27	21/4 - 4	1.944	144	70.00	4.00	33
1 - 4	.698	72	34.25	3.50	27	21/2 - 2	1.908	144	69.00	6.00	34
1 - 5	.750	72	34.25	3.50	27	21/2 - 3	2.106	144	69.00	4.50	34
1 - 6	.786	72	34.50	3.00	27	21/2 - 4	2.193	144	70.00	4.00	34
1 - 10	.857	72	34.50	2.50	27	3 - 2	2.410	144	69.00	6.00	35

44 nookindustries.com

Inch Twin-Lead Screw Assemblies - NOOK INDUSTRIES - #1

Roller screw, Screw jack, Pillow block, Worm gear screw jack, Bearing unit