螺杆螺母系列

NTB高度定制的消隙螺母

Kerk NTB Highly Customizable Anti-Backlash Nut and Lead Screw

Kerk^®NTB系列消隙螺杆组件可承受比ZBX或KHD系列组件更高的负载。它采用专利收紧机构，可在整个使用寿命期间提供较高的轴向刚度，同时将系统的阻力矩保持在最小值。NTB系列螺母组件消除了对螺母预加载荷以补偿负载的需要。该螺母采用自润滑聚缩醛制造而成，可在轧制的精密梯形螺杆上高效运行。Kerkite^®复合聚合物也可作为标准配置。螺杆由303不锈钢制成，可选配我们专有的长寿命Kerkote^®TFE涂层。NTB简单紧凑的设计易于针对特定应用进行更改。NTB组件在整个负载和速度范围内都有低阻力矩、高系统刚度、平稳性和长使用寿命等优点。

尺寸图 -

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)

直径和导程选项 +

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.

润滑选项 +

Haydon Kerk Motion Solutions™提供多种润滑选择。所有Kerk^®螺杆螺母都包含自润滑聚合物。在高要求应用中，Kerkote^®和Black Ice™ TFE涂层可提供优异的性能。

Kerkote^® TFE涂层

Kerkote TFE是一种软涂层和长期干性润滑剂，适用于较软的塑料，如有/无机械加固的乙缩醛和尼龙。通过螺母从涂层上拾取Kerkote TFE颗粒以及塑料螺母内部润滑剂的迁移，实现对螺母/螺杆接口的润滑。润滑剂虽是固体，但在流体润滑剂中也具有一定的“扩散”能力。Kerkote TFE涂层螺杆有最高水平的自润滑性能，不应在可能出现油或其他润滑剂污染的环境中进行润滑或使用。

Black Ice™ TFE涂层

Black Ice TFE涂层具有许多Kerkote TFE涂层的优点，与之不同的是，它是一种硬涂层，在大多数环境中都有卓越的耐用性，几乎可用于所有类型的聚合物丝杆螺母。Black Ice TFE不是干性润滑剂，而是一种抗摩擦涂层，它可完全屏蔽被涂敷的金属表面特性。虽然它不适用于金属或玻璃纤维增强螺母，但Black Ice TFE可牢固地粘合到螺杆表面，并且能够承受来自污染、刚性系统摩擦、流体冲击和冲洗应用的磨损。

产品品号选型向导 +

示例

WDGABR-037-0125-XXXX = 含义：WDG系列螺母，三角法兰安装，Black Ice™TFE涂层，右旋螺纹，3/8英寸螺杆直径，0.125螺纹导程，无其他特殊要求。

ZBXTKR-043-0250-XXXX = 含义：ZBX系列螺母，螺纹安装，Kerkote^®TFE涂层，右旋螺纹，7/16英寸螺杆直径，0.250螺纹导程，无其他特殊要求。

如果您有应用或订单方面的问题，请致电海顿科克销售工程师顾问！
注意：
并非所有螺纹导程都适用于所有的螺杆直径。
新的螺母和导程会不断增加。联系Haydon Kerk Motion Solutions，咨询产品是否有售。

机械性能 +

螺杆惯性
螺杆尺寸		螺杆惯性
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

消隙寿命
系列	无Kerkote^® TFE涂层	含Kerkote^® TFE涂层
NTB	1至1.25亿（英寸）	2至2.5亿（英寸）
NTB	（2.5至3.15亿）（cm）	（5至6.35亿）（cm）

机械性能
丝杠	材料	表面光洁度
	303不锈钢（选配项）	优于16微英寸（0.4微米）
螺母	材料	抗拉强度	膨胀系数
	聚缩醛与润滑添加剂	9,700磅/平方英寸	6.0 x 10 ^–5英寸/英寸/^oF
组件	标准操作温度范围	摩擦系数聚缩醛螺母到螺杆
	32 - 200^o F* (0- 93^oC)*	静态= 0.08 0.08 动态= 0.15 0.09

*极高或极低的温度可能会引起螺母拧合或阻力矩的明显变化。有关可选温度范围材料的问题，请致电Haydon Kerk Motion Solutions™。
**含Kerkote^® TFE涂层

设计和工程数据 +

螺杆精度
Haydon Kerk Motion Solutions, Inc采用独特的精密轧制工艺来制造螺杆。Kerk螺杆的标准导程精度为0.0006英寸/英寸(mm/mm)。导程精度可达0.0001英寸/英寸(mm/mm)。如需更高的导程精度，请咨询厂家。组件具有50微英寸（1.25微米）的极高重复定位精度。

端部加工
Haydon Kerk Motion Solutions可根据要求为您定制设计螺杆，以便您自己加工。

临界速度
这是螺杆可能经受振动或其他动态问题的旋转速度。请参阅临界速度表以确定应用参数是否会导致速度接近临界值。减少临界速度问题的方法有：使用更长的导程、选择更大的直径或增加轴承座的支撑力度。

Critical Speed

长度
最长有12英尺（4米）的长度，（具体取决于直径和导程）。对于可定尺寸的螺杆，其长度以6英寸递增（6英寸、12英寸、18英寸……）+1.0英寸/-0英寸

导程
每转的行程。所有螺杆均按导程而非螺距排列。导程 = 螺距 x 线数

螺距
波峰到波峰的距离或一除以每英寸的螺纹数。（在一个多线螺纹中，螺距等于导程除以线数。）

移动速度
我们使用的螺母材料在各种条件下都有很长的耐磨寿命。但是，高负载和或高速度会加快螺母的磨损。这些情况可能需要特殊的材料。我们针对连续工作的直线移动速度给出了以下建议，以实现最佳的使用寿命：

导程	移动速度	导程	移动速度
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

最大负载
尽管Kerk®消隙组件能够承受相对较高的载荷，且不会发生严重故障，但这些单元被设计为应在尺寸图中所示的载荷下运行。

效率
效率是工作投入与工作产出的关系。它不应该与机械优势混淆。列出的效率是基于Kerkote^®TFE涂层螺杆的理论值。

转矩
螺杆组件所需的电机转矩由三个部分构成：惯性转矩、阻力矩和移动负载的转矩。请注意
这是单独驱动螺杆组件所需的转矩。还必须考虑与驱动摩擦轴承和电机轴、运动部件以及由于组件错位而导致的与阻力相关的其他转矩。

惯性转矩：

T = I α 其中I = 螺杆惯性
j α = 角加速度

阻力矩：
Kerk消隙组件通常具有1到7盎司英寸的阻力矩。阻力矩的大小取决于标准出厂设置或客户指定的设置。一般来说，预设力越高，消隙特性就越好。

移动转矩

T= 负载 x 导程
L 2 π x 效率

反向移动：
有时也称为可逆性，反向移动是指螺杆通过施加在螺母上的推力负载转动的能力。一般情况下，当螺杆导程小于无涂层螺杆直径的1/3或Kerkote^®TFE涂层螺钉直径的1/4时，不会发生反向移动。对于可能出现反向移动的较高导程，保持负载所需的扭矩为：

T = 负载 x 导程 x 反向移动的效率
b 2π

螺杆直线度：

测得的螺杆直线度为总指示偏差（TIR）。螺杆的标准直线度为0.003英寸/英尺。Haydon Kerk Motion Solutions可根据客户要求提供更高的规格。

在发货前，所有螺杆都经手工较直。

典型的端部加工特征 +

Typical End Machining Features +

定制 +

除Kerk^®标准螺母类型外，定制的产品也占公司产品的很大一部分。修改可能是简单的变化，例如不同的安装孔形状或安装螺纹、微小的尺寸变化或特殊材料。Haydon Kerk Motion Solutions生产的梯形螺母具有巨大的价值。通过使用定制模具和特殊加工，螺母还可以用于导轨衬套、滑架、同步皮带轮、齿轮、注射器组件、传感器支架、编码器、夹具和许多其他附加元件。此外，定制设计的螺母可以提供快拆安装座、部分螺纹啮合、半螺母结构或特殊形状。可提供特殊材料以提高组件的性能。材料可以根据极端温度、化学相容性、热处理、机构规定、特殊载荷和许多其他特定要求进行选择。

螺杆螺母系列

NTB高度定制的消隙螺母

尺寸图 -

直径和导程选项 +

润滑选项 +

产品品号选型向导 +

机械性能 +

设计和工程数据 +

典型的端部加工特征 +

Typical End Machining Features +

定制 +