Support Unit Fixed and Supported Side

Maitu's Support Unit Fixed and Supported Side is precision-engineered and is primarily available in two distinct types: the Fixed Side and the Supported Side, each designed to fulfill specific mechanical functions within a system. The configuration of support units is a fundamental aspect in any lead screw assembly, critical for ensuring operational stability and achieving precise linear motion.

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Product Description

The defining feature of the Support Unit Fixed and Supported Side from Maitu factory is its ability to constrain movement in both the axial and radial directions. It typically incorporates a matched pair of angular contact bearings or a deep groove ball bearing combined with a thrust bearing, which together firmly absorb both radial loads and thrust loads from the screw. This configuration is engineered to provide rigid axial fixation, making it an indispensable component for applications requiring high-precision positioning and the transmission of significant bi-directional thrust forces.

Conversely, the Support Unit Fixed and Supported Side is characterized by its capacity to permit axial float while providing radial support. It usually employs a single deep groove ball bearing or a radial bushling, which allows the screw shaft to expand or contract freely in the axial direction due to thermal changes. This specific design is critical for compensating for thermal elongation in long screw assemblies, preventing dangerous internal stresses, binding, and potential system failure.

However, the selection between a fixed and a supported side is not merely a choice but a systematic design decision. An incorrect configuration can lead to reduced accuracy, excessive noise, and premature bearing failure. Thus, the proper pairing and precise alignment of these units are as critical as the screw itself for the integrity of the entire motion system.

We are interested in providing integrated screw and support unit solutions. Our Support Unit Fixed and Supported Side are engineered to match the specifications of our trapezoidal and ACME screws.

Production Parameters

Support Unit Fixed-Side MBK Series

Model	Diameter	L	L1	L2	L3	B	H	b	h	B1	H1	E	P
MBK10	10	25	5	29	5	60	39	30	22	34	32.5	15	46
MBK12	12	25	5	29	5	60	43	30	25	34	32.5	18	46
MBK15	15	27	6	32	6	70	48	35	28	40	38	18	54
MBK17	17	35	9	44	7	86	64	43	39	50	55	28	68
MBK20	20	35	8	43	8	88	60	44	34	52	50	22	70
MBK25	25	42	12	54	9	106	80	53	48	64	70	33	85
MBK30	30	45	14	61	9	128	89	64	51	76	78	33	102
MBK35	35	50	14	67	12	140	96	70	52	88	79	35	114
MBK40	40	60	18	76	15	160	110	80	60	100	90	37	130

Support Unit Fiexd And Supported Side

Support Unit Support Side MBF Series

Model	Diameter	L	B	H	b	h	B1	H1	E	P	d2	X	Y	Z
MBF10	8	20	60	39	30	22	34	32.5	15	46	5.5	6.6	10.7	5
MBF12	10	20	60	43	30	25	34	32.5	18	46	5.5	6.6	10.8	1.5
MBF15	15	20	70	48	35	28	40	38	18	54	5.5	6.6	11	6.5
MBF17	17	23	86	64	43	39	50	55	28	68	6.6	9	14	8.5
MBF20	20	26	88	60	44	34	52	50	22	70	6.6	9	14	8.5
MBF25	25	30	106	80	53	48	64	70	33	85	9	11	17	11
MBF30	30	32	128	89	64	51	76	78	33	102	11	14	20	13
MBF35	35	32	140	96	70	52	88	79	35	114	11	14	20	13
MBF40	40	40	160	110	80	60	100	90	37	130	14	18	26	17.5

Support Unit Fiexd And Supported Side

Support Unit Fixed-Side MFK Series

Model	Diameter	L	H	F	E	Dg6	A	PCD	B	X	Y	Z	M	T
MFK10	10	27	10	17	29.5	34	52	42	42	4.5	8	4	M3	16
MFK12	12	27	10	17	29.5	36	54	44	44	4.5	8	4	M4	19
MFK15	15	32	15	17	36	40	63	50	52	5.5	9.5	6	M4	22
MTFK17	17	45	22	23	47	50	77	62	61	6.6	11	10	M4	24
MFK20	20	52	22	30	50	57	85	70	68	6.6	11	10	M4	30
MFK25	25	57	27	30	60	63	98	80	79	9	15	13	M5	35
MFK30	30	62	30	32	61	75	117	95	95	11	17.5	15	M6	40

Support Unit Fiexd And Supported Side

Support Unit Support Side MEF Series

Model	Diameter	L	H	F	Dg6	A	PCD	B	X	Y	Z
FF06	6	10	6	4	22	36	28	28	3.4	6.5	4
FF10	8	12	7	5	28	43	35	35	3.4	6.5	4
FF12	10	15	7	8	34	52	42	42	4.5	8	4
FF15	15	17	9	8	40	63	50	52	5.5	9.5	5.5
FF17	17	20	11	9	50	77	62	61	6.6	11	6.5
FF20	20	20	11	9	57	85	70	68	6.6	11	6.5
FF25	25	24	14	10	63	98	80	79	9	14	8.5
FF30	30	27	18	9	75	117	95	93	11	17	11

Support Unit Fiexd And Supported Side

Why Choose Maitu Products?

Systematic Motion Integrity

We don’t just sell parts; we provide integrated motion solutions. Our fixed and supported units are engineered to perfectly match our trapezoidal and ACME screw specifications, eliminating alignment errors and ensuring the structural integrity of your entire transmission system.

Advanced Thermal Compensation Design

Our "Supported Side" units are specifically designed to permit axial float. By allowing the screw shaft to expand or contract freely under temperature fluctuations, our design prevents internal stresses and binding, which are the leading causes of premature system failure in long screw assemblies.

High-Rigidity Bi-Directional Loading

For precision positioning, our "Fixed Side" units incorporate high-grade angular contact bearings. This configuration provides superior axial and radial constraint, absorbing significant bi-directional thrust forces to maintain pinpoint accuracy even under heavy-duty industrial loads.

12+ Years of Manufacturing Expertise

With a legacy originating from Shanghai Yingqi and a decade of independent manufacturing in Suzhou, Maitu brings deep domain experience. Our ISO 9001 certified facility uses a self-developed ERP system to monitor every stage of production, ensuring that every support unit meets rigorous industrial tolerances.

Proven Performance & Customization

With over 80,000 units delivered to global customers, we offer a proven track record. Whether you need standard carbon steel or specialized materials like stainless steel or bronze, our team of 10 engineers can customize the support unit to fit your specific environmental and mechanical requirements.

FAQ

How to correctly choose Support Unit Fixed and Supported Side?

A standard high-precision setup requires one Fixed Side (to lock the screw axially and handle thrust loads) and one Supported Side (to provide radial support while allowing for thermal expansion). Our engineering team can help you determine the specific bearing configuration (e.g., angular contact vs. deep groove) based on your load direction and speed requirements.

Are your support units compatible with both Trapezoidal and ACME screws?

Yes. We specialize in integrated solutions. Our support units are specifically machined to match the end-journal dimensions of our 30° Trapezoidal and 29° ACME screws. This ensures a seamless fit, reducing vibration and noise during high-speed operation.

What measures does Maitu take to ensure bearing longevity in these units?

We utilize strict quality control procedures, including precise housing bore grinding and the selection of high-carbon chromium bearing steel. Our units are assembled in controlled environments to prevent contamination, ensuring that the lubricant and seals provide maintenance-free performance for extended intervals.

Can you provide support units for customized shaft diameters and special materials?

Absolutely. While we offer a wide range of standard specifications, our factory is equipped with CNC lathes and high-precision machining centers to handle customized designs. We can manufacture units using various materials—including stainless steel for corrosive environments—based on your specific drawings and technical notes.

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Contact Info

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Address

No.18, Kaifa East Road, Wanping Town, Wujiang District, Suzhou City, Jiangsu Province, China
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Tel

+86-18013705898
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E-mail

mtsales@sz-mt.com.cn

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