BC Backstops Inclined Conveyors Custom Made Bearings

Basic Information
Place of Origin: CHINA
Brand Name: SUMA
Certification: ISO SGS
Model Number: BC
Minimum Order Quantity: 1
Price: USD1000-USD2500 PER PIECE
Packaging Details: Wooden Case
Delivery Time: 15 Days
Payment Terms: L/C, D/A, D/P, T/T, Western Union, Paypal
Supply Ability: 1000PCS Per Month
Product Name: Backstop Clutch BC Material: GCr15 Bearing Steel
Torque Capacity: 4067-1626000Nm Warranty: 1 Year
Rotation Speed: 60-300RPM Weight: 46-6591Kgs
Bore: 75-600mm OEM: Accept
High Light:

BC Backstops Custom Made Bearings

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Inclined Conveyors Custom Made Bearings

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Inclined Conveyors Custom Size Bearings

               BC backstops Inclined Conveyors Custom Made Bearings


Technical Datas

  BC backstops are completely mechanical, automatic operating units, incorporating a time proven basic operating principle, to provide greater safety and longer life with minimum maintenance requirements. Seventeen standard sizes are available up to 1,200,000 pound-feet of torque.

During freewheeling, (normal operation), the cam and roller assembly rotate with the headshaft as shown by the arrows in Illustration 2. The outer race is secured to stationary coverplates and "I" Beam Torque arm. An oil film wedges and separates the rollers from the outer race. This moves the rollers a few thousandths of an inch imparting relative angular motion between the roller cage and cam. This slight movement of the rollers into the deeper cam zones, with a clean lubricant film wedged between rollers and outer race, permits freewheeling without metal to metal contact.

 

Dimensions and Capacities

BC Backstops Inclined Conveyors Custom Made Bearings 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
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

 

BC Backstops Inclined Conveyors Custom Made Bearings 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
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

BC Backstops Inclined Conveyors Custom Made Bearings 2

BC Backstops Inclined Conveyors Custom Made Bearings 3

 

  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

  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
 BC Backstops Inclined Conveyors Custom Made Bearings 4

BC Backstops Inclined Conveyors Custom Made Bearings 5
 

Contact Details
Ellen Zhang

Phone Number : 86-18068536660

WhatsApp : +8618068536660