Description

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Product Parameters

d≤32 d≥40

SFA-DIN-69051-FORM-B-Series-Specifications

Model	Shaft diameter d	lead I	bead diameter Da	Nut Size										Rated load of ball nut		Rigid kgf/ μm
Model	Shaft diameter d	lead I	bead diameter Da	D	A	E	B	L	W	H	X	Q	n	Ca	Coa	Rigid kgf/ μm
SFA1205-2.8	12	5	2.5	24	40	5	10	30	32	30	4.5	-		661	1316	19
SFA1210-2.8 *	12	10	2.5	24	40	5	10	42	32	30	4.5	-		642	1287	19
SFA1605-3.8 *	15	5	2.778	28	48	5	10	31	38	40	5.5	M6		1112	2507	30
SFA1610-2.8		10	2.778	28	48	5	10	42	38	40	5.5	M6		839	1821	23
SFA1616-1.8 *		16	2.778	28	48	5	10	43	38	40	5.5	M6	1.8x1	552	1137	14
SFA1616-2.8 *		16	2.778	28	48	5	10	59	38	40	5.5	M6	2.8x1	808	1769	22
SFA1620-1.8 *		20	2.778	28	48	5	10	50	38	40	5.5	M6	1.8x1	554	1170	14
SFA2005-3.8 *	20	5	3.175	36	58	7	10	33	47	44	6.6	M6	3.8x1	1484	3681	37
SFA2010-3.8 *		10	3.175	36	58	7	10	52	47	44	6.6	M6	3.8x1	1516	3833	40
SFA2020-1.8 *		20	3.175	36	58	7	10	52	47	44	6.6	M6	1.8x1	764	1758	19
SFA2020-2.8		20	3.175	36	58	7	10	72	47	44	6.6	M6	2.8x1	1118	2734	29
SFA2505-3.8 *	25	5	3.175	40	62	7	10	33	51	48	6.6	M6	3.8x1	1650	4658	43
SFA2510-3.8 *		10	3.175	40	62	7	12	52	51	48	6.6	M6		1638	4633	45
SFA2525-1.8 *		25	3.175	40	62	7	12	60	51	48	6.6	M6		843	2199	22
SFA2525-2.8 *		25	3.175	40	62	7	12	85	51	48	6.6	M6		1232	3421	34
SFA3205-3.8	32	5	3.175	50	80	9	12	35	65	62	9	M6		1839	6026	51
SFA3210-3.8	31	10	3.969	50	80	9	12	53	65	62	9	M6		2460	7255	55
SFA3220-2.8		20	3.969	50	80	9	12	72	65	62	9	M6		1907	5482	43
SFA3232-1.8		32	3.969	50	80	9	12	78	65	62	9	M6		1257	3426	27
SFA3232-2.8		32	3.969	50	80	9	12	110	65	62	9	M6		1838	5329	42
SFA4005-3.8	40	5	3.175	63	93	9	14	39	78	70	9	M8		2018	7589	60
SFA4010-3.8	38	10	6.35	63	93	9	14	57	78	70	9	M8	3.8x1	5035	13943	67
SFA4020-2.8		20	6.35	63	93	9	14	78	78	70	9	M8		3959	10715	54
SFA4040-1.8		40	6.35	63	93	9	14	96	78	70	9	M8		2585	6648	34
SFA4040-2.8		40	6.35	63	93	9	14	136	78	70	9	M8		3780	10341	52
SFA5005-3.8 °	50	5	3.175	75	110	10.5	15	42	93	85	11	M8		2207	9542	68
SFA5010-3.8 °	48	10	6.35	75	110	10.5	18	57	93	85	11	M8		5638	17852	79
SFA5020-3.8 °		20	6.35	75	110	10.5	18	98	93	85	11	M8	3.8x1	5749	18485	87
SFA5050-1.8 °		50	6.35	75	110	10.5	18	117	93	85	11	M8		2946	8749	42
SFA5050-2.8 °		50	6.35	75	110	10.5	18	167	93	85	11	M8	2.8x1	4308	13610	65

* Marked★The marking person can make the special specification of SFNH sliding table.

* For the demand for the model, please contact the business personnel.

Product Features and Applications

Features

High lubrication and long life

The dustproof device made of resin material can retain a large amount of lubricating oil and gradually penetrate during use, so that the screw rod remains lubricated for a long time, and the service life is almost one times higher than the original model.

Low friction

The shape of the contact rail is optimized, and when the nut rotates, the dynamic friction can be reduced by about 20%, which helps to save energy in mechanical operation.

Good dust resistance

The end dust-proof device has been developed to maintain the structural integrity of the device and effectively prevent dust and particles from entering.

High precision and stability

the use of unique manufacturing technology and high-quality materials, whether it is high-speed operation or heavy load conditions, can maintain excellent transmission effect, provide stable power support for the equipment.

Efficient energy conversion

The use of advanced ball nut transmission technology, low friction resistance, high transmission efficiency, can achieve efficient energy conversion, saving energy costs.

Application

01.

Precision processing equipment

① CNC machine tools (CNC) and machining centers

High-precision positioning: SFA nuts reduce vibration through end-cap cycle design, combined with preloading technology to eliminate backlash, suitable for machining center spindle feed systems that require micron-level repeated positioning accuracy.

High-speed cutting: such as model SFA1616-2.8 (lead 16mm), SFA2525-2.8 (lead 25mm), support high-speed operation (high Dm-N value), while maintaining low noise, suitable for high-speed milling machines and lathes.

② Semiconductor and electronic equipment manufacturing

In chip packaging and chip placement machines (SMT), the low friction characteristics of SFA nuts (dynamic friction is reduced by 20%) and maintenance-free design ensure long-term stable operation of precision components in a clean environment.

02.

Automation and intelligent manufacturing system

① Linear module and mechanical arm

The belt * model (such as SFA1205-2.8 *, SFA2020-2.8 *) is a special standard model for the sliding table, which is used for the linear motion unit of the multi-axis linkage robot arm, providing high rigidity (such as SFA4040-2.8 rigidity up to 52 kgf/μm) and fast response.

Transport positioning and assembly stations in automated production lines rely on their efficient energy conversion (transmission efficiency> 90%) to reduce energy consumption.

② Logistics and handling equipment

Large lead model (such as SFA5050-2.8, lead 50mm) is suitable for lifting mechanism of AGV trolley and storage stacker, carrying high load (rated load up to 4308 kgf).

03.

Harsh industrial environment

① Woodworking and dust environment equipment

The patented dust-proof design effectively blocks sawdust and dust and prolongs the service life. It is often used in the feed system of woodworking engraving machine and cutting machine.

② Printing and packaging machinery

In the high-speed roller positioning system, the silent characteristics of SFA nuts (optimizing the circulation path to reduce noise) and anti-pollution ability guarantee the stability of continuous production.

04.

Special Scene Advantages

① Maintenance-free requirements:

The SFA nut has a built-in oil storage resin material, which prolongs the lubrication life by nearly one times, reduces the frequency of downtime and maintenance, and is suitable for nuclear power equipment, ocean platforms and other scenarios that are difficult to maintain frequently.

② Replacement of old model:

Compatible with SFH/SFNH series screws, the nuts can be replaced separately during maintenance, reducing equipment modification costs (such as machine tool modification projects).

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Typical Model and Application Correspondence Table

Model	lead (mm)	Load capacity	Typical Scene	Adapted equipment
SFA1205-2.8 *	5	Medium-low load	Precision sliding table, small mechanical arm	Electronic assembly line, detector
SFA2525-2.8	25	Medium-high load	CNC machining center, large milling machine	metal cutting machine tool
SFA4040-2.8	40	High load	Heavy handling modules, lifts	Logistics AGV, construction machinery
SFA5050-1.8	50	Ultra-high load	large machine tool feed system	Gantry milling machine, shipbuilding equipment

Product Details

Compared with other nuts, the SFA series is an alternative to the SFH/SFNH series. The SFA nut is an end cover circulation type, which is similar to the circulation mode of the SFY nut. It has high smoothness and mute effect when moving at high speed. The SFU nut is an internal circulation type, which is more suitable for smaller diameter screw rods.

Product supporting evidence

The appearance of SFA nut is free of bump, defect and burr, and the screw raceway is free of crack. The assembly effect is smooth and soft, without sticking or reverse sticking. The nut concentricity beating is less than or equal to 0.05.

logistics transportation scheme

1. Transport mode selection

① Air (urgent order):

Applicable scenarios: high time-sensitive requirements (such as emergency supply of production line).

Operation process: nuts are packed into moisture-proof boxes after counting and packaging, and the "precision parts" logo is affixed; Through Qingdao, Shanghai and other airports by air, ordinary goods arrive in major cities.

Note: avoid copper and zinc components mixed (part of the aviation embargo), need to provide material proof.

② Land transportation (regular batch):

recommend logistics: support VAT special ticket settlement including freight quotation; Arrival must be accompanied by a stamped bill of materials, indicating the order number and consignee.

Aging control: 7-10 days after the order is placed, large equipment nuts (such as SFY5050) priority vehicle transportation to reduce transit losses.

2. Special environmental response

① Temperature and humidity control: Transport vehicles need to be equipped with temperature and humidity recorders, especially when shipping containers placed moisture-proof agent to prevent high humidity environment caused by corrosion.

② Multimodal transport: export orders using "carrier + shockproof box + wooden support" combination, compatible with shipping containers and port automated loading and unloading, suitable for Europe, America, Southeast Asia and other routes.