JFZD

Large Heavy-Load Drive Ball screws

Introduction of product design and manufacturing:

Length and heavy load have always been an important problem in the manufacture of large and heavy-duty ball screws. This series of products have overcome the technology of design, heat treatment, alignment, raceway forming processing and dynamic detection. It has the design structure of multi-path large-diameter ball circulation loop, the maximum rated dynamic load of the product is 126 tons, and the maximum rated static load is 595 tons. KGG has now put into use a series of equipment such as a 10-meter large lathe, a 10-meter hardware rotary milling machine, a 10-meter large grinding machine, a 10-meter intermediate frequency quenching machine tool, a 10-meter large straightening machine, and a 10-meter laser lead screw stroke error measuring instrument. Take the lead in establishing the first single 10-meter ball screw pair production line in China, of which the 10-meter laser screw travel error measuring instrument has passed the calibration of the Jiangsu Institute of Metrology and has been put into use, solving the problem of a single 10-meter ball screw. The key technology in the dynamic detection process of the screw pair.

Specifications and dynamic and static load parameters table:

Nominal diameter (mm)	Lead (mm)	Ball diameter (mm)	Rated dynamic load for different number of turns n Ca kN			Rated Statical load for different number of turns n Ca kN
d0	Ph0	Dw	n=4	n=5	n=8	n=4	n=5	n=8
80	20	12.7			305.1			1074.7
	25	12.7		203.7	305.1		670.5	1072.8
	32	12.7		202.8	303.9		668.4	1069.5
100	20	12.7		233.7	350.1		887.3	1419.7
	25	15.875		304.3	457		1050.5	1679.3
	32	15.875		304.3	455.9		1047.4	1675.9
	40	15.875	250.2			835.5
125	20	12.7		258	386.6		1103.2	1765.1
	25	18.256		406.2	608.5		1523.5	2437.6
	32	20.638		463	693.6		1665.2	2664.4
	40	20.638	381.2			1329.7
160	20	12.7		291.9	437.3		1493.2	2389.1
	25	18.256		464.5	695.9		2015.5	3224.7
	32	20.638		543.9	814.8		2306.2	3690
	40	25.4	592			2213.4
200	25	18.256		532.9	798.3		2736.4	4378.3
	32	20.638		605.3	906.8		2949.6	4719.4
	40	25.4	670.8		1257.5	2882.8		5949.6

JF Large Heavy-Load Drive Ball screws

Note:

1) K is the theoretical calculation value when the preload force F is 0.1Ca and the axial load F is 0.3C;

2) When the axial load F is not equal to 0.3C, K in the formula is the stiffness value in the table

3) Suitable for use in high temperature conditions

Model	Nominal diameter	Nominal lead	Screw outer diameter	Ball diameter	Screw Bottom diameter	Cycles	Load rating			Nut Mounting Connection Dimensions
	Nominal diameter	Nominal lead	Screw outer diameter	Ball diameter	Screw Bottom diameter	Cycles	Dynamic load	Statical load	Stiffness	D1（g6）	D2( -0.1 -0.2)	L2	L3	D3	B	D5	D4	L₁
	d0	Ph0	d1	Dw	d2	n	Ca kN	Coa kN	Kc N/μm	D1（g6）	D2( -0.1 -0.2)	L2	L3	D3	B	D5	D4	L₁
JF8020-8	80	20	78	12.7	68.9	8	305.1	1074.7	2498.5	125	125	25	15	170	32	13.5	150	218
JF8025-5	80	25	78	12.7	68.9	5	203.7	670.5	1619	125	125	25	15	170	32	13.5	150	189
JF8025-8	80	25	78	12.7	68.9	8	305.1	1072.8	2538.1	125	125	25	15	170	32	13.5	150	264
JF8032-5	80	32	78	12.7	68.9	5	202.8	668.4	1636.1	125	125	25	15	170	32	13.5	150	231
JF8032-8	80	32	78	12.7	68.9	8	303.9	1069.5	2564.5	125	125	25	15	170	32	13.5	150	327
JF10020-5	100	20	97	12.7	87.9	5	233.7	887.3	1896.9	150	150	25	20	207	32	17.5	180	160
JF10020-8	100	20	97	12.7	87.9	8	350.1	1419.7	2976.5	150	150	25	20	207	32	17.5	180	220
JF10025-5	100	25	97	15.875	85.7	5	304.3	1050.5	1904.3	150	150	25	20	207	32	17.5	180	196
JF10025-8	100	25	97	15.875	85.7	8	457	1679.3	3058.3	150	150	25	20	207	32	17.5	180	271
JF10032-5	100	32	97	15.875	85.7	5	304.3	1047.4	1985.4	150	150	25	20	207	32	17.5	180	240
JF10032-8	100	32	97	15.875	85.7	8	455.9	1675.9	3113	150	150	25	20	207	32	17.5	180	336
JF10040-4	100	40	97	15.875	85.7	4	250.2	835.5	1620.5	150	150	40	20	207	36	17.5	180	238
JF12520-5	125	20	123.5	12.7	114.4	5	258	1103.2	2236	170	170	25	25	244	36	22	210	158
JF12520-8	125	20	123.5	12.7	114.4	8	386.6	1765.1	3514	170	170	25	25	244	36	22	210	218
JF12525-5	125	25	123.5	18.256	110.6	5	406.2	1523.5	2304	190	190	25	25	258	36	22	224	204
JF12525-8	125	25	123.5	18.256	110.6	8	608.5	2437.6	3615	190	190	25	25	258	36	22	224	279
JF12532-5	125	32	123.5	20.638	109.2	5	463	1665.2	2254	190	190	25	25	258	36	22	224	252
JF12532-8	125	32	123.5	20.638	109.2	8	693.6	2664.4	3536	190	190	25	25	258	36	22	224	348
JF12540-4	125	40	123.5	20.638	109.2	4	381.2	1329.7	1848	190	190	40	25	258	40	22	224	252
JF16020-5	160	20	156.5	12.7	147.4	5	291.9	1493.2	2732	220	220	25	25	294	40	22	260	163
JF16020-8	160	20	156.5	12.7	147.4	8	437.3	2389.1	4294	220	220	25	25	294	40	22	260	223
JF16025-5	160	25	156.5	18.256	143.6	5	464.5	2015.5	2809	240	240	40	25	314	40	22	280	201
JF16025-8	160	25	156.5	18.256	143.6	8	695.9	3224.7	4410	240	240	40	25	314	40	22	280	276
JF16032-5	160	32	156.5	20.638	142.2	5	543.9	2306.2	2867	240	240	40	25	314	40	22	280	241
JF16032-8	160	32	156.5	20.638	142.2	8	814.8	3690	4499	240	240	40	25	314	40	22	280	337
JF16040-4	160	40	156.5	25.4	138.6	4	592	2213.4	2356	240	240	40	25	314	40	22	280	251
JF20025-5	200	25	196.5	18.256	183.6	5	532.9	2736.4	3345	280	280	40	25	349	50	22	315	195
JF20025-8	200	25	196.5	18.256	183.6	8	798.3	4378.3	5257	280	280	40	25	349	50	22	315	270
JF20032-5	200	32	196.5	20.638	182.2	5	605.3	2949.6	3415	280	280	40	25	349	50	22	315	242
JF20032-8	200	32	196.5	20.638	182.2	8	906.8	4719.4	5363	280	280	40	25	349	50	22	315	338
JF20040-4	200	40	196.5	25.4	178.6	4	670.8	2882.8	2929	300	300	40	25	369	50	22	335	252
JF20040-8	200	40	196.5	25.4	178.6	8	1257.5	5949.6	5748	300	300	40	25	369	50	22	335	412

JFZD Large Heavy-Load Gasket Preload Ball screws