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Holdback Bckstop Clutch With High Torque Transmission Precision Built
Holdback Bckstop Clutch With High Torque Transmission Precision Built
Specifications
Brand Name :
SUMA
Model Number :
BC90MA
Certification :
ISO SGS
Place of Origin :
CHINA
MOQ :
1
Price :
USD6500-USD8000 PER PIECE
Payment Terms :
L/C, D/A, D/P, T/T, Western Union, Paypal
Supply Ability :
1000PCS Per Month
Delivery Time :
15 Days
Packaging Details :
Wooden Case
Product Name :
Backstop Clutch BC90MA
Material :
GCr15 Bearing Steel
Torque Capacity :
122024Nm
Warranty :
1 Year
Rotation Speed :
105RPM
Weight :
520Kgs
Bore :
235mm
OEM :
Accept
Description

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

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
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

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
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

Holdback Bckstop Clutch With High Torque Transmission Precision Built

Holdback Bckstop Clutch With High Torque Transmission Precision Built

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


Product tags

norbar torque multiplier

,

torque limiting clutch

,

torque limiter clutch
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Holdback Bckstop Clutch With High Torque Transmission Precision Built

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Product Detail
Brand Name :
SUMA
Model Number :
BC90MA
Certification :
ISO SGS
Place of Origin :
CHINA
MOQ :
1
Price :
USD6500-USD8000 PER PIECE
Contact Supplier
Holdback Bckstop Clutch With High Torque Transmission Precision Built

Changzhou Suma Precision Machinery Co., Ltd

Verified Supplier
5 Years
jiangsu, changzhou
Since 2005
Business Type :
Manufacturer, Trading Company
Main Products :
One Way Clutch Bearing, Sprag Clutch Bearing, Drawn Cup Needle Bearing
Total Annual :
1000000-2000000
Employee Number :
50~51
Certification Level :
Verified Supplier
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