Kerk^®NTB系列消隙螺桿組件可承受比ZBX或KHD系列組件更高的負載。它采用收緊機構，可在整個使用壽命期間提供較高的軸向剛度，同時將系統(tǒng)的阻力矩保持在小值。NTB系列螺母組件消除了對螺母預加載荷以補償負載的需要。該螺母采用自潤滑聚縮醛制造而成，可在軋制的精密梯形螺桿上高效運行。Kerkite^®復合聚合物也可作為標準配置。螺桿由303不銹鋼制成，可選配我們專有的長壽命Kerkote^®TFE涂層。NTB簡單緊湊的設計易于針對特定應用進行更改。NTB組件在整個負載和速度范圍內都有低阻力矩、高系統(tǒng)剛度、平穩(wěn)性和長使用壽命等優(yōu)點。

尺寸圖 +

Please note: Metric numbers are for reference only.

NTBR SERIES: FLANGE MOUNT(Rectangle)

Screw Ø	Nut Ø	Nut Length	Flange Height	Flange Width	Flange Thickness	Slot Width	Bolt Circle Ø	Dynamic Load	Drag Torque
A inch (mm)	B inch (mm)	C inch (mm)	D1 inch (mm)	D inch (mm)	E inch (mm)	F inch (mm)	G inch (mm)	lbs. (Kg)	oz.-in. (Nm)
1/8 (3)	0.40 (10.2)	0.50 (13)	0.40 (10.2)	0.75 (19.1)	0.13 (3.2)	0.120 (3.05)	0.600 (15.24)	5 (2.3)	(0.5) (0.004)
0.132 (3.3)	0.40 (10.2)	0.50 (13)	0.40 (10.2)	0.75 (19.1)	0.13 (3.2)	0.120 (3.05)	0.600 (15.24)	5 (2.3)	(0.5) (0.004)
9/64 (3.6)	0.40 (10.2)	0.50 (13)	0.40 (10.2)	0.75 (19.1)	0.13 (3.2)	0.120 (3.05)	0.600 (15.24)	5 (2.3)	(0.5) (0.004)
5/32 (4)	0.40 (10.2)	0.50 (13)	0.40 (10.2)	0.75 (19.1)	0.13 (3.2)	0.120 (3.05)	0.600 (15.24)	5 (2.3)	(0.5) (0.004)
3/16 (5)	0.40 (10.2)	0.50 (13)	0.40 (10.2)	0.75 (19.1)	0.13 (3.2)	0.120 (3.05)	0.600 (15.24)	5 (2.3)	(0.5) (0.004)
7/32 (5.6)	0.40 (10.2)	0.50 (13)	0.40 (10.2)	0.75 (19.1)	0.13 (3.2)	0.120 (3.05)	0.600 (15.24)	5 (2.3)	(0.5) (0.004)

NTBT SERIES: THREAD MOUNT

Screw Ø	Nut Ø	Nut Length	Thread	Thread Length	Dynamic Load	Drag Torque
A in. (mm)	B in. (mm)	C in. (mm)	M in.	N in. (mm)	lbs. (Kg)	oz.-in. (Nm)
1/8 (3)	0.40 (10.2)	0.50 (13)	3/8-24	0.160 (4.06)	5 (2.3)	0.5 (0.004)
0.132 (3.3)	0.40 (10.2)	0.50 (13)	3/8-24	0.160 (4.06)	5 (2.3)	0.5 (0.004)
9/64 (3.6)	0.40 (10.2)	0.50 (13)	3/8-24	0.160 (4.06)	5 (2.3)	0.5 (0.004)
5/32 (4)	0.40 (10.2)	0.50 (13)	3/8-24	0.160 (4.06)	5 (2.3)	0.5 (0.004)
3/16 (5)	0.40 (10.2)	0.50 (13)	3/8-24	0.160 (4.06)	5 (2.3)	0.5 (0.004)
7/32 (5.6)	0.40 (10.2)	0.50 (13)	3/8-24	0.160 (4.06)	5 (2.3)	0.5 (0.004)
1/4 (6)	0.52 (13.2)	1.1 (28)	7/6-20	0.25 (6.4)	10 (4.5)	0.5-2 (0.014-0.04)
5/16 (8)	0.80 (20.3)	1.8 (45)	3/4-20	0.38 (9.5)	20 (9.1)	1-3 (0.007-0.02)
3/8 (10)	0.80 (20.3)	1.8 (45)	3/4-20	0.38 (9.5)	20 (9.1)	1-3 (0.007-0.02)
7/16 (11)	0.90 (22.9)	1.8 (46)	13/16-16	0.38 (9.5)	30 (13.6)	1-3 (0.007-0.02)
1/2 (13)	1.06 (26.9)	2.1 (54)	15/16-16	0.38 (9.5)	100 (45.5)	2-6 (0.014-0.04)
5/8 (16)	1.38 (34.9)	2.3 (59)	1 1/8-16	0.38 (9.5)	125 (56.8)	2-6 (0.014-0.04)
3/4 (19)	1.56 (39.6)	2.7 (67)	1 3/8-16	0.50 (12.7)	150 (68.2)	3-7 (0.02-0.05)
7/8 (22)	1.75 (44.5)	2.8 (70)	1 9/16-16	0.50 (12.7)	200 (90.9)	4-8 (0.03-0.06)
15/16 (23.81)	1.75 (44.5)	2.8 (70)	1 9/16-16	0.50 (12.7)	200 (90.9)	4-8 (0.03-0.06)

NTBF SERIES: ROUND FLANGE MOUNT

Screw ∅	Nut ∅	Nut Length	Flange ∅	Flange Length	Mounting Hole ∅	Bolt Circle ∅	Hub Length	Hub ∅	Dynamic Load	Drag Torque
A inch (mm)	B inch (mm)	C inch (mm)	D inch (mm)	E inch (mm)	F inch (mm)	G inch (mm)	H inch (mm)	J inch (mm)	lbs. (kg)	oz.-in. (Nm)
1/2 (13)	1.06 (26.9)	2.1 (54)	1.75 (44.5)	0.25 (6.4)	0.220 (5.59)	1.406 (35.71)	0.12 (3.0)	1.00 (25.4)	100 (45.5)	2-6 (0.014-0.04)
5/8 (16)	1.38 (34.9)	2.3 (59)	2.13 (54.1)	0.28 (7.0)	0.220 (5.59)	1.750 (44.45)	0.10 (2.54)	1.25 (31.8)	125 (56.8)	2-6 (0.014-0.04)
3/4 (19)	1.56 (39.6)	2.7 (67)	2.38 (60.5)	0.31 (7.9)	0.220 (5.59)	2.000 (50.80)	0.10 (2.54)	1.50 (38.1)	150 (68.2)	3-7 (0.02-0.05)
7/8 (22)	1.75 (44.5)	2.8 (70)	2.63 (66.8)	0.38 (9.5)	0.220 (5.59)	2.250 (57.15)	0.12 (3.0)	1.75 (44.5)	200 (90.9)	4-8 (0.03-0.06)
15/16 (24)	1.75 (44.5)	2.8 (70)	2.63 (66.8)	0.38 (9.5)	0.220 (5.59)	2.250 (57.15)	0.12 (3.0)	1.75 (44.5)	200 (90.9)	4-8 (0.03-0.06)

NTBA SERIES: FLANGE MOUNT(Triangle)

Screw Ø	Nut Ø	Nut Length	Flange Ø	Flange Thickness	Mount Hole Ø	Bolt Circle Ø	Hub Width	Hub Ø	Dynamic Load	Drag Torque
A in. (mm)	B in. (mm)	C in. (mm)	D in. (mm)	E in. (mm)	F in. (mm)	G in. (mm)	H in. (mm)	J in. (mm)	lbs. (Kg)	oz.-in. (Nm)
1/4 (6)	0.52 (13.2)	1.1 (28)	1.00 (25.4)	0.16 (4)	0.143 (3.63)	.750 (19.1)	0.08 (2)	.500 (12.7)	10 (4.5)	0.5-2 (0.004-0.14)
5/16 (8)	0.80 (20.3)	1.8 (46)	1.50 (38.1)	0.20 (5.1)	0.200 (5.08)	1.125 (28.6)	0.10 (2.54)	.750 (19.1)	20 (9.1)	1-3 (0.007-0.02)
3/8 (10)	0.80 (20.3)	1.8 (46)	1.50 (38.1)	0.20 (5.1)	0.200 (5.08)	1.125 (28.6)	0.10 (2.54)	.750 (19.1)	20 (9.1)	1-3 (0.007-0.02)
7/16 (11)	0.90 (22.9)	1.8 (46)	1.62 (41.2)	0.23 (5.7)	0.200 (5.08)	1.250 (31.8)	0.10 (2.54)	.875 (22.2)	30 (13.6)	1-3 (0.007-0.02)

直徑和導程選項 +

1/8" (3.2 mm) Diameter Lead Screw. Diameter Code 012

Lead		Lead Code	Left Hａnd Avail.	Outside Diameter (For Reference)		Root Diameter (For Reference)		Efficiency %*
in	mm			in	mm	in	mm
0.024	0.61	0024		0.129	3.28	0.093	2.36	44
0.039	1	0039		0.129	3.28	0.094	2.39	57
0.048	1.22	0048		0.129	3.28	0.093	2.36	61
0.075	1.91	0075		0.129	3.28	0.093	2.36	70
0.096	2.44	0096	√	0.129	3.28	0.093	2.36	75
0.125	3.18	0125	LH Only	0.125	3.18	0.078	1.98	80

*Listed efficiency are theoretical values based on Kerkote^® TFE coated lead screws.
Shaded areas have been translated from their designed inch or mm dimension to an equivalent mm or inch dimension.
0.132" (3.3 mm)) Diameter Lead Screw. Diameter Code 013

Lead		Lead Code	Left Hａnd Avail.	Outside Diameter (For Reference)		Root Diameter (For Reference)		Efficiency %*
in	mm			In	mm	in	mm
0.02	0.5	0020		0.132	3.35	0.104	2.64	42
0.039	1	0039		0.132	3.35	0.08	2.03	61
0.079	2.00.	0079		0.132	3.35	0.08	2.03	75
0.157	4	0157		0.132	3.35	0.08	2.03	84
0.315	8	0315		0.132	3.35	0.08	2.03	87

*Listed efficiency are theoretical values based on Kerkote^® TFE coated lead screws.
Shaded areas have been translated from their designed inch or mm dimension to an equivalent mm or inch dimension.
9/64" (3.6 mm) Diameter Lead Screw. Diameter Code 014

Lead		Lead Code	Left Hａnd Avail.	Outside Diameter (For Reference)		Root Diameter (For Reference)		Efficiency %*
in	mm			in	mm	in	mm
0.012	0.3	0012		0.14	3.56	0.123	3.12	26
0.024	0.61	0024		0.14	3.56	0.105	2.67	43
0.048	1.22	0048		0.14	3.56	0.081	2.06	62
0.096	2.44	0096		0.14	3.56	0.081	2.06	75
0.394	10	0394		0.14	3.56	0.102	2.59	86

*Listed efficiency are theoretical values based on Kerkote^® TFE coated lead screws.
Shaded areas have been translated from their designed inch or mm dimension to an equivalent mm or inch dimension.
5/32" (4 mm) Diameter Lead Screw. Diameter Code 016

Lead		Lead Code	Left Hand Avail.	Outside Diameter (For Reference)		Root Diameter (For Reference)		Efficiency %*
in	mm			in	mm	in	mm
0.033	0.84	0033	√	0.156	3.96	0.116	2.95	45
0.05	1.27	0050	LH Only	0.156	3.96	0.096	2.44	59
0.094	2.39	0094		0.164	4.17	0.128	3.25	67
0.125	3.18	0125		0.168	4.27	0.13	3.3	74
0.25	6.35	0250		0.156	3.96	0.13	3.3	83
0.375	9.53	0375		0.156	3.96	0.13	3.3	85
0.5	12.7	0500		0.156	3.96	0.13	3.3	86

*Listed efficiency are theoretical values based on Kerkote^® TFE coated lead screws.
Shaded areas have been translated from their designed inch or mm dimension to an equivalent mm or inch dimension.
3/16" (5 mm) Diameter Lead Screw. Diameter Code 018

Lead		Lead Code	Left Hand Avail.	Outside Diameter (For Reference)		Root Diameter (For Reference)		Efficiency %*
in	mm			in	mm	in	mm
0.02	0.5	0020		0.188	4.78	0.163	4.14	30
0.025	0.64	0025		0.188	4.78	0.15	3.81	39
0.039	1	0039		0.188	4.78	0.144	3.66	47
0.05	1.27	0050		0.188	4.78	0.124	3.15	58
0.1	2.54	0100		0.188	4.78	0.136	3.45	69
0.1875	4.76	0188		0.188	4.78	0.167	4.24	78
0.2	5.08	0200		0.188	4.78	0.124	3.15	82
0.375	9.53	0375		0.188	4.78	0.161	4.09	84
0.4	10.16	0400		0.188	4.78	0.124	3.15	84
0.427	10.85	0427		0.188	4.78	0.162	4.11	85
0.5	12.7	0500	√	0.188	4.78	0.142	3.61	86

*Listed efficiency are theoretical values based on Kerkote^® TFE coated lead screws.
Shaded areas have been translated from their designed inch or mm dimension to an equivalent mm or inch dimension.
7/32" (5.6 mm) Diameter Lead Screw. Diameter Code 021

Lead		Lead Code	Left Hand Avail.	Outside Diameter (For Reference)		Root Diameter (For Reference)		Efficiency %*
in	mm			in	mm	in	mm
0.024	0.61	0024		0.218	5.54	0.181	4.6	31
0.03125	0.79	0031		0.204	5.18	0.16	4.06	39
0.048	1.22	0048		0.216	5.49	0.156	3.96	50
0.05	1.27	0050		0.2	5.08	0.135	3.43	52
0.0625	1.59	0063		0.218	5.54	0.142	3.61	60
0.096	2.44	0096		0.218	5.54	0.156	3.96	66
0.192	4.88	0192		0.218	5.54	0.156	3.96	78
0.25	6.35	0250	√	0.204	5.18	0.14	3.56	81
0.384	9.75	0384		0.218	5.54	0.159	4.04	86

*Listed efficiency are theoretical values based on Kerkote^® TFE coated lead screws.
Shaded areas have been translated from their designed inch or mm dimension to an equivalent mm or inch dimension.
1/4" (6 mm) Diameter Lead Screw. Diameter Code 025

Lead		Lead Code	Left Hａnd Avail.	Outside Diameter (For Reference)		Root Diameter (For Reference)		Efficiency %*
in	mm			in	mm	in	mm
0.024	0.61	0024		0.25	6.35	0.218	5.54	28
0.025	0.64	0025		0.25	6.35	0.214	5.44	30
0.03125	0.79	0031		0.25	6.35	0.208	5.28	34
0.039	1	0039		0.25	6.35	0.19	4.83	40
0.048	1.22	0048		0.25	6.35	0.19	4.83	45
0.05	1.27	0050	√	0.25	6.35	0.191	4.85	46
0.059	1.5	0059		0.25	6.35	0.172	4.37	52
0.0625	1.59	0063		0.25	6.35	0.17	4.32	52
0.079	2	0079		0.25	6.35	0.17	4.32	59
0.096	2.44	0096		0.25	6.35	0.19	4.83	61
0.1	2.54	0100		0.25	6.35	0.19	4.83	62
0.118	3	0118		0.25	6.35	0.175	4.45	68
0.125	3.18	0125		0.25	6.35	0.19	4.83	67
0.197	5	0197		0.25	6.35	0.172	4.37	72
0.2	5.08	0200		0.25	6.35	0.17	4.32	65
0.25	6.35	0250	√	0.25	6.35	0.168	4.27	79
0.3125	7.94	0313		0.25	6.35	0.184	4.67	81
0.333	8.46	0333		0.25	6.35	0.17	4.32	82
0.394	10	0394		0.25	6.35	0.17	4.32	78
0.4	10.16	0400		0.25	6.35	0.17	4.32	84
0.5	12.7	0500	√	0.25	6.35	0.169	4.29	85
0.75	19.05	0750		0.25	6.35	0.17	4.32	86
1	25.4	1000	√	0.25	6.35	0.17	4.32	84

*Listed efficiency are theoretical values based on Kerkote^® TFE coated lead screws.
Shaded areas have been translated from their designed inch or mm dimension to an equivalent mm or inch dimension.
5/16" (8 mm) Diameter Lead Screw. Diameter Code 031

Lead		Lead Code	Left Hand Avail.	Outside Diameter (For Reference)		Root Diameter (For Reference)		Efficiency %*
in	mm			in	mm	in	mm
0.057	1.44	0057		0.315	8	0.243	6.71	43
0.0741	1.88	0074		0.312	7.92	0.211	5.36	51
0.111	2.82	0111		0.312	7.92	232	5.89	60
0.167	4.24	0167		0.312	7.92	0.211	5.36	69
0.25	6.35	0250		0.312	7.92	0.234	5.94	76
0.5	12.7	0500	√	0.312	7.92	0.232	5.89	83
0.8	20.32	0800		0.306	7.77	0.243	6.17	86

*Listed efficiency are theoretical values based on Kerkote^® TFE coated lead screws.
Shaded areas have been translated from their designed inch or mm dimension to an equivalent mm or inch dimension.
3/8" (10 mm) Diameter Lead Screw. Diameter Code 037

Lead		Lead Code	Left Hand Avail.	Outside Diameter (For Reference)		Root Diameter (For Reference)		Efficiency %*
in	mm			in	mm	in	mm
0.025	0.64	0025		0.375	9.53	0.337	8.56	21
0.039	1	0039		0.394	10.01	0.35	8.89	28
0.04167	1.06	0042		0.375	9.53	0.32	8.13	34
0.05	1.27	0050	√	0.375	9.53	0.301	7.65	36
0.055	1.4	0055		0.375	9.53	0.303	7.7	38
0.059	1.5	0059	√	0.389	9.88	0.313	7.95	38
0.0625	1.59	0063	√	0.375	9.53	0.295	7.49	41
0.068	1.73	0068		0.388	9.86	0.295	7.49	42
0.079	2	0079		0.375	9.53	0.264	6.71	47
0.0833	2.12	0083		0.375	9.53	0.293	7.44	48
0.1	2.54	0100	√	0.375	9.53	0.266	6.76	53
0.125	3.18	0125		0.375	9.53	0.295	7.49	59
0.157	4	0157		0.375	9.53	0.274	6.96	65
0.1667	4.23	0167		0.371	9.42	0.261	6.63	61
0.197	5	0197		0.375	9.53	0.266	6.76	69
0.2	5.08	0200	√	0.375	9.53	0.266	6.76	69
0.25	6.35	0250		0.375	9.53	0.268	6.81	70
0.3	7.62	0300		0.375	9.53	0.255	6.48	76
0.333	8.46	0333		0.375	9.53	0.245	6.22	78
0.363	9.22	0363	√	0.375	9.53	0.26	6.6	79
0.375	9.53	0375		0.375	9.53	0.265	6.73	79
0.394	10	0394		0.375	9.53	0.26	6.6	79
0.4	10.16	0400		0.375	9.53	0.293	7.44	79
0.472	12	0472		0.388	9.86	0.287	7.29	82
0.5	12.7	0500	√	0.388	9.86	0.265	6.73	81
0.667	16.94	0667		0.375	9.53	0.273	6.93	83
0.75	19.05	0750		0.388	9.86	0.273	6.93	84
0.984	25	0984		0.375	9.53	0.262	6.65	84
1	25.4	1000		0.383	9.73	0.254	6.45	84
1.2	30.48	1200	√	0.383	9.73	0.254	6.45	84
1.25	31.75	1250		0.375	9.53	0.278	7.06	84
1.5	38.1	1500		0.375	9.53	0.264	6.71	83

*Listed efficiency are theoretical values based on Kerkote^® TFE coated lead screws.
Shaded areas have been translated from their designed inch or mm dimension to an equivalent mm or inch dimension.
7/16" (11 mm) Diameter Lead Screw. Diameter Code 043

Lead		Lead Code	Left Hand Avail.	Outside Diameter (For Reference)		Root Diameter (For Reference)		Efficiency %*
in	mm			in	mm	in	mm
0.05	1.27	0050		0.437	11.1	0.362	9.19	30
0.0625	1.59	0063	√	0.436	11.07	0.358	9.09	38
0.079	2	0079		0.472	11.99	0.374	9.5	42
0.111	2.82	0111		0.437	11.1	0.327	8.31	52
0.118	3	0118		0.438	11.13	0.363	9.22	52
0.125	3.18	0125		0.438	11.13	0.357	9.07	54
0.197	5	0197		0.438	11.13	0.315	8	65
0.263	6	0236		0.433	11	0.313	7.95	70
0.25	6.35	0250		0.442	11.23	0.325	8.26	70
0.307	7.8	0307		0.445	11.3	0.343	8.71	73
0.325	8.26	0325		0.444	11.28	0.342	8.69	74
0.394	10	0394		0.446	11.33	0.331	8.41	78
0.472	12	0472		0.438	11.13	0.318	8.08	80
0.5	12.7	0500		0.452	11.48	0.327	8.31	80
0.615	15.62	0615		0.475	12.07	0.376	9.55	82

*Listed efficiency are theoretical values based on Kerkote^® TFE coated lead screws.
Shaded areas have been translated from their designed inch or mm dimension to an equivalent mm or inch dimension.
1/2" (13 mm) Diameter Lead Screw. Diameter Code 050

Lead		Lead Code	Left Hand Avail.	Outside Diameter (For Reference)		Root Diameter (For Reference)		Efficiency %*
in	mm			in	mm	in	mm
0.05	1.27	0050		0.495	12.57	0.433	11	29
0.079	2	0079		0.473	12.01	0.355	9.02	41
0.098	2.5	0098		0.5	12.7	0.383	9.73	46
0.1	2.54	0100	√	0.49	12.45	0.364	9.25	46
0.125	3.18	0125		0.5	12.7	0.374	9.5	51
0.157	4	0157		0.5	12.7	0.384	9.75	58
0.16	4.06	0160		0.5	12.7	0.388	9.86	67
0.1667	4.23	0167		0.5	12.7	0.384	9.75	58
0.197	5	0197		0.5	12.7	0.365	9.27	62
0.2	5.08	0200	√	0.492	12.5	0.366	9.3	63
0.25	6.35	0250		0.5	12.7	0.382	9.7	67
0.333	8.46	0333	√	0.497	12.62	0.362	9.19	73
0.394	10	0394		0.497	12.62	0.362	9.19	76
0.4	10.16	0400		0.497	12.62	0.364	9.25	76
0.5	12.7	0500		0.488	12.4	0.352	8.94	79
0.63	16	0630		0.5	12.7	0.374	9.5	80
0.75	19.05	0750		0.525	13.34	0.399	10.13	83
0.8	20.32	0800		0.5	12.7	0.37	9.4	83
0.984	25	0984		0.5	12.7	0.369	9.37	84
1	25.4	1000	√	0.49	12.45	0.372	9.45	84
1.5	38.1	1500		0.49	12.45	0.374	9.5	85
2	50.8	2000		0.488	12.4	0.378	9.6	87

*Listed efficiency are theoretical values based on Kerkote^® TFE coated lead screws.
Shaded areas have been translated from their designed inch or mm dimension to an equivalent mm or inch dimension.
5/8" (16 mm) Diameter Lead Screw. Diameter Code 062

Lead		Lead Code	Left Hand Avail.	Outside Diameter (For Reference)		Root Diameter (For Reference)		Efficiency %*
in	mm			in	mm	in	mm
0.1	2.54	0100		0.615	15.62	0.498	12.65	40
0.125	3.18	0125	√	0.625	15.88	0.47	11.94	45
0.2	5.08	0200		0.625	15.88	0.495	12.57	53
0.25	6.35	0250		0.625	15.88	0.469	11.91	63
0.315	8	0315		0.627	15.93	0.493	12.52	68
0.41	10.41	0410	√	0.625	15.88	0.481	12.22	72
0.5	12.7	0500	√	0.625	15.88	0.478	12.14	76
0.63	16	0630		0.625	15.88	0.491	12.47	78
1	25.4	1000		0.625	15.88	0.481	12.22	83
1.5	38.1	1500		0.625	15.88	0.499	12.67	85
1.575	40.01	1575	√	0.625	15.88	0.499	12.67	86
2	50.8	2000	√	0.625	15.88	0.499	12.67	86

*Listed efficiency are theoretical values based on Kerkote^® TFE coated lead screws.
Shaded areas have been translated from their designed inch or mm dimension to an equivalent mm or inch dimension.
3/4" (19 mm) Diameter Lead Screw. Diameter Code 075

Lead		Lead Code	Left Hand Avail.	Outside Diameter (For Reference)		Root Diameter (For Reference)		Efficiency %*
in	mm			in	mm	in	mm
0.0625	1.59	0063		0.75	19.05	0.671	17.04	25
0.098	2.5	0098		0.742	18.85	0.626	15.9	35
0.1	2.54	0100	√	0.746	18.95	0.624	15.85	35
0.1667	4.23	0167		0.727	18.47	0.645	16.38	47
0.197	5	0197		0.745	18.92	0.624	15.85	51
0.2	5.08	0200		0.741	18.82	0.632	16.05	52
0.25	6.35	0250		0.731	18.57	0.639	16.23	57
0.276	7	0276		0.75	19.05	0.624	15.85	59
0.333	8.46	0333		0.75	19.05	0.624	15.85	64
0.394	10	0394		0.745	18.92	0.619	15.72	67
0.5	12.7	0500		0.744	18.9	0.623	15.82	73
0.551	14	0551		0.75	19.05	0.624	15.85	73
0.591	15	0591		0.749	19.02	0.623	15.82	74
0.709	18	0709		0.78	19.81	0.65	16.51	77
0.748	19	0748		0.672	17.07	0.547	13.89	80
0.787	20	0787		0.78	19.81	0.648	16.46	78
0.8	20.32	0800		0.75	19.05	0.618	15.7	79
0.945	24	0945		0.734	18.64	0.633	16.08	80
1	25.4	1000	√	0.743	18.87	0.619	15.72	81
1.5	38.1	1500	√	0.712	18.08	0.59	14.99	84
1.969	50	1969		0.751	19.08	0.62	15.75	84
2	50.8	2000	√	0.742	18.85	0.611	15.52	84
2.4	60.96	2400	√	0.75	19.05	0.62	15.75	84
3.622	92	3622	√	0.75	19.05	0.634	16.1	87

*Listed efficiency are theoretical values based on Kerkote^® TFE coated lead screws.
Shaded areas have been translated from their designed inch or mm dimension to an equivalent mm or inch dimension.
7/8" (22 mm) Diameter Lead Screw. Diameter Code 087

Lead		Lead Code	Left Hand Avail.	Outside Diameter (For Reference)		Root Diameter (For Reference)		Efficiency %*
in	mm			in	mm	in	mm
0.2	5.08	0200	√	0.87	22.1	0.742	18.85	48
0.236	6	0236		0.848	21.54	0.773	19.63	52
0.25	6.35	0250		0.875	22.23	0.749	19.02	53
0.394	10	0394		0.875	22.23	0.741	18.82	65
0.5	12.7	0500		0.862	21.89	0.744	18.9	69
0.630	16	0630		0.875	22.23	0.741	18.82	73
0.667	16.94	0667		0.871	22.12	0.745	18.92	74
0.787	20	0787		0.875	22.23	0.741	18.82	78
0.945	24	0945		0.875	22.23	0.741	18.82	79
1	25.4	1000		0.871	22.12	0.742	18.85	80

*Listed efficiency are theoretical values based on Kerkote^® TFE coated lead screws.
Shaded areas have been translated from their designed inch or mm dimension to an equivalent mm or inch dimension.
15/16" (24 mm) Diameter Lead Screw. Diameter Code 093

Lead		Lead Code	Left Hａnd Avail.	Outside Diameter (For Reference)		Root Diameter (For Reference)		Efficiency %*
in	mm			in	mm	in	mm
0.05	1.27	0050	LH Only	0.938	23.83	0.874	22.2	17
2	50.8	2000		0.927	23.55	0.815	20.7	85
3	76.2	3000		0.939	23.85	0.803	20.4	86

*Listed efficiency are theoretical values based on Kerkote^® TFE coated lead screws.
Shaded areas have been translated from their designed inch or mm dimension to an equivalent mm or inch dimension.

潤滑選項 +

Haydon Kerk Motion Solutions™提供多種潤滑選擇。所有Kerk^®螺桿螺母都包含自潤滑聚合物。在高要求應用中，Kerkote^®和Black Ice™ TFE涂層可提供優(yōu)異的性能。

Kerkote^® TFE涂層

Kerkote TFE是一種軟涂層和*干性潤滑劑，適用于較軟的塑料，如有/無機械加固的乙縮醛和尼龍。通過螺母從涂層上拾取Kerkote TFE顆粒以及塑料螺母內部潤滑劑的遷移，實現(xiàn)對螺母/螺桿接口的潤滑。潤滑劑雖是固體，但在流體潤滑劑中也具有一定的“擴散”能力。Kerkote TFE涂層螺桿有高水平的自潤滑性能，不應在可能出現(xiàn)油或其他潤滑劑污染的環(huán)境中進行潤滑或使用。

Black Ice™ TFE涂層

Black Ice TFE涂層具有許多Kerkote TFE涂層的優(yōu)點，與之不同的是，它是一種硬涂層，在大多數(shù)環(huán)境中都有的耐用性，幾乎可用于所有類型的聚合物絲桿螺母。Black Ice TFE不是干性潤滑劑，而是一種抗摩擦涂層，它可*屏蔽被涂敷的金屬表面特性。雖然它不適用于金屬或玻璃纖維增強螺母，但Black Ice TFE可牢固地粘合到螺桿表面，并且能夠承受來自污染、剛性系統(tǒng)摩擦、流體沖擊和沖洗應用的磨損。
產品品號選型向導 +

示例

WDGABR-037-0125-XXXX = 含義：WDG系列螺母，三角法蘭安裝，Black Ice™TFE涂層，右旋螺紋，3/8英寸螺桿直徑，0.125螺紋導程，無其他特殊要求。

ZBXTKR-043-0250-XXXX = 含義：ZBX系列螺母，螺紋安裝，Kerkote^®TFE涂層，右旋螺紋，7/16英寸螺桿直徑，0.250螺紋導程，無其他特殊要求。

如果您有應用或訂單方面的問題，請致電海頓科克銷售工程師顧問！
注意：
并非所有螺紋導程都適用于所有的螺桿直徑。
新的螺母和導程會不斷增加。聯(lián)系Haydon Kerk Motion Solutions，咨詢產品是否有售。

機械性能 +

螺桿慣性
螺桿尺寸		螺桿慣性
英寸	mm	（盎司英寸秒平方/英寸）
1/8	(3.2)	1.8 x 10 ^-7
3/16	(4.76)	1.1 x 10 ^–6
1/4	(6)	3 x 10 ^-5
5/16	(8)	5 x 10 ^-5
3/8	(10)	1.5 x 10 ^-5
7/16	(11)	3.5 x 10 ^-5
1/2	(13)	5.2 x 10 ^-5
5/8	(16)	14.2 x 10 ^-5
3/4	(19)	30.5 x 10 ^-5
7/8	(22)	58.0 x 10 ^-5
15/16	(24)	73.0 x 10 ^-5

消隙壽命
系列	無Kerkote^® TFE涂層	含Kerkote^® TFE涂層
NTB	1至1.25億（英寸）	2至2.5億（英寸）
NTB	（2.5至3.15億）（cm）	（5至6.35億）（cm）

機械性能
絲杠	材料	表面光潔度
	303不銹鋼（選配項）	優(yōu)于16微英寸（0.4微米）
螺母	材料	抗拉強度	膨脹系數(shù)
	聚縮醛與潤滑添加劑	9,700磅/平方英寸	6.0 x 10 ^–5英寸/英寸/^oF
組件	標準操作溫度范圍	摩擦系數(shù) 聚縮醛螺母到螺桿
	32 - 200^o F* (0- 93^oC)*	靜態(tài)= 0.08 0.08 動態(tài)= 0.15 0.09

**或極低的溫度可能會引起螺母擰合或阻力矩的明顯變化。有關可選溫度范圍材料的問題，請致電Haydon Kerk Motion Solutions™。
**含Kerkote^® TFE涂層

設計和工程數(shù)據(jù) +

螺桿精度
Haydon Kerk Motion Solutions, Inc采用*的精密軋制工藝來制造螺桿。Kerk螺桿的標準導程精度為0.0006英寸/英寸(mm/mm)。導程精度可達0.0001英寸/英寸(mm/mm)。如需更高的導程精度，請咨詢廠家。組件具有50微英寸（1.25微米）的*重復定位精度。

端部加工
Haydon Kerk Motion Solutions可根據(jù)要求為您定制設計螺桿，以便您自己加工。

臨界速度
這是螺桿可能經(jīng)受振動或其他動態(tài)問題的旋轉速度。請參閱臨界速度表以確定應用參數(shù)是否會導致速度接近臨界值。減少臨界速度問題的方法有：使用更長的導程、選擇更大的直徑或增加軸承座的支撐力度。

Critical Speed

長度
長有12英尺（4米）的長度，（具體取決于直徑和導程）。對于可定尺寸的螺桿，其長度以6英寸遞增（6英寸、12英寸、18英寸……）+1.0英寸/-0英寸

導程
每轉的行程。所有螺桿均按導程而非螺距排列。導程 = 螺距 x 線數(shù)

螺距
波峰到波峰的距離或一除以每英寸的螺紋數(shù)。（在一個多線螺紋中，螺距等于導程除以線數(shù)。）

移動速度
我們使用的螺母材料在各種條件下都有很長的耐磨壽命。但是，高負載和或高速度會加快螺母的磨損。這些情況可能需要特殊的材料。我們針對連續(xù)工作的直線移動速度給出了以下建議，以實現(xiàn)的使用壽命：

導程	移動速度	導程	移動速度
1/10 - 1/2英寸	4-英寸/秒	1 - 12 mm	100毫米/秒
1/2 - 1英寸	10-英寸/秒	12 - 25 mm	250毫米/秒
1 - 2 1/2英寸	30-英寸/秒	25 - 60 mm	760毫米/秒

大負載
盡管Kerk®消隙組件能夠承受相對較高的載荷，且不會發(fā)生嚴重故障，但這些單元被設計為應在尺寸圖中所示的載荷下運行。

效率
效率是工作投入與工作產出的關系。它不應該與機械優(yōu)勢混淆。列出的效率是基于Kerkote^®TFE涂層螺桿的理論值。

轉矩
螺桿組件所需的電機轉矩由三個部分構成：慣性轉矩、阻力矩和移動負載的轉矩。請注意
這是單獨驅動螺桿組件所需的轉矩。還必須考慮與驅動摩擦軸承和電機軸、運動部件以及由于組件錯位而導致的與阻力相關的其他轉矩。

慣性轉矩：

T = I α 其中I = 螺桿慣性
j α = 角加速度

阻力矩：
Kerk消隙組件通常具有1到7盎司英寸的阻力矩。阻力矩的大小取決于標準出廠設置或客戶的設置。一般來說，預設力越高，消隙特性就越好。

移動轉矩

T= 負載 x 導程
L 2 π x 效率

反向移動：
有時也稱為可逆性，反向移動是指螺桿通過施加在螺母上的推力負載轉動的能力。一般情況下，當螺桿導程小于無涂層螺桿直徑的1/3或Kerkote^®TFE涂層螺釘直徑的1/4時，不會發(fā)生反向移動。對于可能出現(xiàn)反向移動的較高導程，保持負載所需的扭矩為：

T = 負載 x 導程 x 反向移動的效率
b 2π

螺桿直線度：

測得的螺桿直線度為總指示偏差（TIR）。螺桿的標準直線度為0.003英寸/英尺。Haydon Kerk Motion Solutions可根據(jù)客戶要求提供更高的規(guī)格。

在發(fā)貨前，所有螺桿都經(jīng)手工較直。

典型的端部加工特征 +
定制 +

除Kerk^®標準螺母類型外，定制的產品也占公司產品的很大一部分。修改可能是簡單的變化，例如不同的安裝孔形狀或安裝螺紋、微小的尺寸變化或特殊材料。Haydon Kerk Motion Solutions生產的梯形螺母具有巨大的價值。通過使用定制模具和特殊加工，螺母還可以用于導軌襯套、滑架、同步皮帶輪、齒輪、注射器組件、傳感器支架、編碼器、夾具和許多其他附加元件。此外，定制設計的螺母可以提供快拆安裝座、部分螺紋嚙合、半螺母結構或特殊形狀。可提供特殊材料以提高組件的性能。材料可以根據(jù)溫度、化學相容性、熱處理、機構規(guī)定、特殊載荷和許多其他特定要求進行選擇。