Holdback Bckstop Clutch With High Torque Transmission Precision Built

Changzhou Suma Precision Machinery Co., Ltd.

Negotiable2024/4/4 21:18:11

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Nature of the Manufacturer: Manufacturer
Product Category: Bearing
Place of Origin: JiangSu, ChangZhou

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Changzhou Suma Precision Machinery Co., Ltd.

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Overview Product Details Company Description

Place of Origin CHINA Brａnd Name SUMA Certification ISO SGS Model Number BC90MA

BC90MA Holdback Bckstop Clutch with High Torque Transmission

Technical Datas of Holdback Backstop Clutch

SUMA automatic backstops are precision built safety devices designed to protect inclined conveyors or vertical elevators from the dangers of gravity accelerated reversed runaway. To be assured of reliable protection and the longest possible service life, it is important that the following recommendations be observed for the installation, lubrication, and maintenance of Marlａnd backstops. As soon as the unit has been received, examine it carefully for damage in transit and report any breakage discovered to the transit company at once. All tags and bulletins attached to the unit should be carefully read before placing the unit in operation and then filed for future reference.

Dimensions and Capacities of Holdback Backstop Clutch

Holdback Bckstop Clutch With High Torque Transmission Precision Built 0

Backstop Size	Torque N-m	Rated Torque lb. ft.	Max RPM	Load "L" Kgs.	Load "L" lbs.	Max.* Bore mm	Max.* Bore in.	Max.* Bore Keyway mm	Max.* Bore Keyway in.	Ship Weight Kgs.	Ship Weight lbs.
3MA	4067	3,000	300	510	1,120	75	2.94	20 x 4.9	.75 x .25	46	100
6MA	8135	6,000	250	920	2,000	95	3.69	25 x 5.4	.88 x .31	69	150
12MA	16270	12,000	210	1325	2,880	115	4.50	32 x 7.4	1.00 x .38	100	220
18MA	24405	18,000	180	1776	3,860	140	5.44	36 x 8.4	1.25 x .44	152	330

Backstop Size	A		B		C		D		E		F		G
Backstop Size	mm	in.	mm	in.	mm	in.	mm	in.	mm	in.	mm	in.	mm	in.
3MA	210	8.25	143	5.62	146	5.75	64	2.50	76	3	813	32	105	4.12
6MA	248	9.75	165	6.50	169	6.62	70	2.75	102	4	914	36	124	4.87
12MA	292	11.50	203	8.00	178	7.00	83	3.25	127	6	1270	50	146	5.75
18MA	343	13.50	235	9.25	189	7.44	92	3.62	152	6	1422	56	168	6.6

Holdback Bckstop Clutch With High Torque Transmission Precision Built 1

Backstop Size	Torque N-m	Rated Torque lb. ft.	Max RPM	Load "L" Kgs	Load "L" lbs.	Max.* Bore mm	Max.* Bore in.	Max.* Bore Keyway mm	Max.* Bore Keyway in.	Ship Weight Kgs.	Ship Weight lbs.
27MA	36607	27,000	150	2259	4,910	165	6.50	40 x 9.4	1.50 x .50	207	450
45MA	61012	45,000	135	3450	7,500	180	7	45 x 10.4	1.75 x .56	276	600
63MA	85417	63,000	120	4462	9,700	205	8	50 x 11.4	2.00 x .69	381	830
90MA	122024	90,000	105	6072	13,200	235	9	56 x 12.4	2.50 x .75	520	1,130
135MA	183035	135,000	90	8464	18,400	265	10	63 x 12.4	2.50 x .87	690	1,500
180MA	244047	180,000	80	10580	23,000	300	11.75	70 x 14.4	3.00 x 1.00	966	2,100

Backstop Size	A		B		C		D		E		F		G
Backstop Size	mm	in.	mm	in.	mm	in.	mm	in.	mm	in.	mm	in.	mm	in.
27MA	384	15.12	254	10.00	222	8.75	98	3.87	178	7	1676	66	191	7.50
45MA	445	17.50	289	11.37	235	9.25	105	4.12	203	8	1829	72	216	8.50
63MA	498	19.62	311	12.25	244	9.62	127	5.00	254	10	1981	78	244	9.62
90MA	584	25.75	362	14.25	276	10.87	140	5.50	305	12	2083	82	270	10.62
135MA	654	30.37	406	16.00	314	12.37	143	5.62	381	15	2235	88	308	12.12
180MA	772	34.50	419	16.50	330	13.00	159	6.25	457	18	2388	94	349	13.75

Mounting and Coupling of Holdback Backstop Clutch

When the conveyor decelerates and the cam subsequently comes to rest, the spring actuated roller cage, Illustration 1, has already positioned the rollers into the contact zone. All rollers have been positively guided to engage uniformly and maintain their relative positions accurately to assure uniform load distribution. The rollers then engage in compression between the precision ground, hardened cam plane surfaces and the inside diameter of the outer race. Relative motion between the cam and outer race is not required to engage rollers. When the backstop is in the "engaged" or "backstopping" condition, the cam, rollers, and outer race are relatively stationary and therefore, not subject to wear if used within normal tabulated rating.

Mounting Details of Holdback Backstop Clutch

Marlａnd backstops are furnished with a clearance fit between the bore and shaft for easy field installations. The key should be a “drive tight” fit on the sides only. As a result a method of axial shaft retention is required for all backstops. The preferred method of accomplishing this is with the use of set collars which can be furnished by Marlａnd upon request.

Pictures of Holdback Backstop Clutch
Holdback Bckstop Clutch With High Torque Transmission Precision Built 4

Holdback Bckstop Clutch With High Torque Transmission Precision Built 5

　　Main Market:North America, South America, Western Europe, Eastern Europe, Eastern Asia, Southeast Asia, Middle EastBusiness Type:Manufacturer, Trading CompanyBrandsSUMANo. of Employees50~51Annual Sales1000000-2000000Year Established2005Export p.c70% - 80%Changzhou Suma Precision Machinery Co., Ltd was established in 2005, which was a professional and non-stop manufacturer for mechanical parts, integrates into R&D, Design, Manufacturing and Sales . One Way Clutch Bearing: CSK, ASNU, AS , NF, FE, DC, FWD, BWC, AXK, AA, B200, BB, CKA, ... Backstop Clutch : BS, MZ, FSO, HPI, PB, BS...R, NJ, NYD, NF, CKZ, RSBW, AV , ... Overrunning clutch: FXM, GFR, RSCI, RSXM, CKL-A, CKF-A, RSBI, GFK, GV, GVG, BSEU, ... Needle Roller Bearings: HF,HFL, RC, RCB, FC, FCB, OWC, EWC, 1WC, HK, SCE, BCE, IR, ...Cam follower bearings : CF, KR, CFE, CFH, CYR, CYR...S, NATV, NATR, NUTR, KRV, RSTO, ...Spherical Plain Bearings : GE, GE...ES-2RS, GE...DO-2RS, GEG...ES-2RS, GEEW...ES-2RS, GE...UK-2RS, GE...ET-2ES, ... Advantage of Company ?Germany Technology Introduction ensure goods reach an top-level quality . Core Technical Team ensure ability to Find out - Work out problems more efficiently . Over 15 Years Production Experience makes us easier to find out a solution from any industrial field . Superior Equipment Production Line ensure goods produced under strictly quality control . OEM / ODM available significantly save the customer's funds and enlarge the benefits. Advantage of Products High Torque Transmission High Load Capacity Preferable Wear Resistance Free Sample Quality Test Service (specially for small standard item)Pre-Lubricated ensure its Long Life Using Time Application Field With a wide range of variety ( Over 100 different patterns and more than thousands sizes available ), products are widely used in Printing Machine, Packaging Machine ,Conveyor System, Bucket Elevator, Gearbox , Reducer, Gearmotor, Electronics Toy, Hydraulic System and any power transmission industrial field. Market With over 13 years experience, well equipped testing facilities and strict quality control, Changzhou Suma Precision Machinery Co., Ltd products sell well all over the world, the main markets are European, America, Canada, Brazil, India, Asia, etc . It was a certified enterprise with Quality Management System ISO9001:2015, SGS , Safety Certificate of Approval for Mining Products . In the meantime, with accurate control of key process and technical support from engineer team, customized products are also available. Stable product performance and reliable after sales service always are our only way to win customer.HISTORY2005-8-8, Establishd Changzhou Suma Precision Machinery Co.,Ltd. At begining only produce some items of One way clutch bearings like CSK DC ASNU NFS GFR, etc .2012-07-11, Technical Team do R&D , Develop new design of the backstop clutch / overrunning clutch which has big torque transmission, widely used in Mining, Mednical, Conveyor System, Reducer, Gearbox, etc . 2015-03-16, Try to Step into the Needle roller bearings / Cam follower bearings to enlarge the market share . 2018-10-15, Involved in the field of spherical plain bearings and bring great convenience for new and old customers. SERVICEThe business principle of Changzhou Suma Precision Machinery Co., Ltd is human- oriented , customer first, excellent quality, prestige guarantee and perfect service . We anticipate for the cooperation with you and create a better future.Our Service :Give Technical Guidance before order ensure no mistake purchase .Online Trade-Assurance service make client more reliable to do internation business. Update production status frequently to make sure custom know exactly of every details .7/24 hours online quick answer to clear client doubt. Good package to protect no damage or harm during shipment . Supply Technical Manual for client do maintenance .Any quality problem during the warranty period can be negotiated to be solved ( Except for vandalism )One Way Bearing / Sprag Clutch Package for your reference :OUR TEAMWe always believe in that , Running a business is running the " Man " ，Only a united and cohesive team can produce high-quality products 。So we Organize team building activities from time to time to enhance mutual exchanges .