Standard

3-Roll Impact

Absorbs the energy of material falling onto the belt, with cushioned impact rollers in a troughed carrying idler.

Where it's used

Installed directly beneath loading and transfer chutes, where lump and fines drop onto the belt. The yielding rollers protect the belt carcass and splices from impact damage in the highest-wear zone of the conveyor. Where the belt carries a steady material stream without impact loading, a steel carry roller suits better: constant load builds heat in the rubber discs and breaks them down, though steel rollers cannot take heavy impact.

Catalogue part numbers

Standard sizes from the CEMA idlers catalogue, by CEMA class and Lorbrand series. Dimensions in mm, lettered as in the drawing; slotted hole sizes are given with each class. In the part number, replace “00” with the trough angle: 20°, 35° or 45°. Sizes and masses are nominal; certified drawings are available on request.

Dimension drawing of the 3-Roll Impact idler, lettered as in the catalogue tables
CEMA C Series 25 · ⌀127–159 mm rollers · 6205-2RS bearings · slotted holes 14 × 25 mm
Part numberBelt widthFL20°35°45°HBMass (kg)
CDCDCDRotatingTotal
⌀127 mm roller · bearing 6205-2RS
25K-450-127-62-004501907005672745213184793442091409.520
25K-500-127-62-005002007505962785483245033512091409.622
25K-600-127-62-0060024085071129165334760037920914011.325
25K-750-127-62-00750290100085531678538372042121616012.331
25K-900-127-62-0090034011509993339174118414572161601538
25K-1000-127-62-00100038012501114346102343493848521616016.741
25K-1050-127-62-00105039013001143350104944096249221616016.942
25K-1200-127-62-00120045014501316377120748211075422241751949
25K-1350-127-62-001350500165014603941339510122757722417520.855
25K-1400-127-62-001400530170015464051418527130059822417521.356
25K-1500-127-62-001500560180016334151498545137261922417523.759
⌀133 mm roller · bearing 6205-2RS
25K-450-133-62-0045019070056728052132447935021514010.221
25K-500-133-62-0050020075059628454833050335721514010.722
25K-600-133-62-0060024085071129765335360038521514012.226
25K-750-133-62-00750290100085532278538972042722216014.233
25K-900-133-62-00900340115099933991741784146322216016.339
25K-1000-133-62-00100038012501114352102344093849122216018.142
25K-1050-133-62-00105039013001143356104944696249822216018.344
25K-1200-133-62-001200450145013163831207488110754823017520.550
25K-1350-133-62-001350500165014604001339516122758323017522.656
25K-1400-133-62-001400530170015464111418533130060423017524.259
25K-1500-133-62-001500560180016334211498551137262523017525.661
⌀152 mm roller · bearing 6205-2RS
25K-450-152-62-0045019070056729952134347936923414012.924
25K-500-152-62-0050020075059630354834950337623414013.125
25K-600-152-62-0060024085071131665337260040423414015.529
25K-750-152-62-00750290100085534178540872044624116018.237
25K-900-152-62-00900340115099935891743684148224116020.844
25K-1000-152-62-00100038012501114371102345993851024116023.247
25K-1050-152-62-00105039013001143375104946596251724116023.849
25K-1200-152-62-00120045014501316402120750711075672491752555
25K-1350-152-62-00135050016501460419133953512276022491752963
25K-1400-152-62-001400530170015464301418552130062324917531.266
25K-1500-152-62-001500560180016334401498570137264424917531.967
⌀159 mm roller · bearing 6205-2RS
25K-450-159-62-0045019070056730652135047937624114012.824
25K-500-159-62-005002007505963105483565033832411401325
25K-600-159-62-0060024085071132365337960041124114015.529
25K-750-159-62-00750290100085534878541572045324816018.237
25K-900-159-62-00900340115099936591744384148924816020.944
25K-1000-159-62-00100038012501114378102346693851724816023.448
25K-1050-159-62-00105039013001143382104947296252424816023.649
25K-1200-159-62-001200450145013164091207514110757425617526.556
25K-1350-159-62-001350500165014604261339542122760925617529.263
25K-1400-159-62-001400530170015464371418559130063025617531.566
25K-1500-159-62-001500560180016334471498577137265125617533.869
CEMA D Series 32 · ⌀152–178 mm rollers · 6306-2RS bearings · slotted holes 14 × 25 mm
Part numberBelt widthFL20°35°45°HBMass (kg)
CDCDCDRotatingTotal
⌀152 mm roller · bearing 6306-2RS
32K-600-152-63-0060024085071132465337960041124116017.338
32K-750-152-63-0075029010008553417854087204462411602043
32K-900-152-63-00900340115099936591744384148924917522.652
32K-1000-152-63-0010003801250111437810234669385172491752557
32K-1050-152-63-00105039013001143382104947296252424917525.258
32K-1200-152-63-001200450145013164091207514110757425619028.167
32K-1350-152-63-001350500165014604271339542122760925619030.872
32K-1400-152-63-00140053017001546437141855913006302561903381
32K-1500-152-63-001500560180016334471498577137265125619035.188
32K-1600-152-63-001600600200017484611603600146968025619036.196
32K-1800-152-63-001800660220019204881762641161472926320040.4109
⌀178 mm roller · bearing 6306-2RS
32K-600-178-63-0060024085071135065340560043726716021.843
32K-750-178-63-00750290100085536778543472047226716025.248
32K-900-178-63-00900340115099939191746984151527517528.658
32K-1000-178-63-00100038012501114404102349293854327517531.763
32K-1050-178-63-0010503901300114340810494989625502751753265
32K-1200-178-63-001200450145013164351207540110760028219035.874
32K-1350-178-63-001350500165014604531339568122763528219039.281
32K-1400-178-63-00140053017001546463141858513006562821904290
32K-1500-178-63-001500560180016334731498603137267728219044.797
32K-1600-178-63-001600600200017484871603626146970628219046.1106
32K-1800-178-63-001800660220019205141762667161475528920051.5120
CEMA E Series 40 · ⌀178–203 mm rollers · 6308-2RS bearings · slotted holes 18 × 30 mm
Part numberBelt widthFL20°35°45°HBMass (kg)
CDCDCDRotatingTotal
⌀178 mm roller · bearing 6308-2RS
40K-900-178-63-00900340115099939891747784152228219031.569
40K-1000-178-63-00100038012501114412102349993855028219034.575
40K-1050-178-63-00105039013001143415104950596255728219034.976
40K-1200-178-63-001200450145013164351207540110760028219038.688
40K-1350-178-63-001350500165014604601339575122764228920042104
40K-1400-178-63-001400530170015464701418593130066328920044.7108
40K-1500-178-63-001500560180016334801498610137268528920047.5114
40K-1600-178-63-001600600200017485081603647146972730323048.8120
40K-1800-178-63-001800660220019205281762681161476930323054.3145
40K-2000-178-63-002000740240021515561973727180782630323058.7170
40K-2100-178-63-002100765250022235642039741186784430323061.3177
40K-2400-178-63-002400870290025256212316823212193932428065.1220
⌀203 mm roller · bearing 6308-2RS
40K-900-203-63-00900340115099942391750284154730719037.876
40K-1000-203-63-00100038012501114437102352493857530719041.582
40K-1050-203-63-00105039013001143440104953096258230719041.983
40K-1200-203-63-0012004501450131646012075651107625307190116.596
40K-1350-203-63-001350500165014604851339600122766731420050.7112
40K-1400-203-63-001400530170015464951418618130068831420054117
40K-1500-203-63-001500560180016335051498635137271031420057.3124
40K-1600-203-63-001600600200017485331603672146975232823059.1131
40K-1800-203-63-001800660220019205531762706161479432823065.7156
40K-2000-203-63-002000740240021515811973752180785132823071.2186
40K-2100-203-63-002100765250022235892039766186786932823074.2190
40K-2400-203-63-002400870290025256462316848212196434928082.8237
CEMA F Series 50 · ⌀203 mm rollers · 6310-2RS bearings · slotted holes 18 × 30 mm
Part numberBelt widthFL20°35°45°HBMass (kg)
CDCDCDRotatingTotal
⌀203 mm roller · bearing 6310-2RS
50K-1500-203-63-001500560180016335241498649137272432823085.2178
50K-1600-203-63-001600600200017485541603693146977334928087.8195.6
50K-1800-203-63-001800660220019205751762727161481634928095.6238
50K-2000-203-63-0020007402400215160219737731807872349280102.8257
50K-2100-203-63-0021007652500222361120397881867890349280106.4265
50K-2400-203-63-0024008702800252564623168482121964349280117.2290
50K-2500-203-63-0025009002900261265723958652193985349280121319.8
50K-2600-203-63-00260093030002698667247488222661006349280123.1327
50K-2800-203-63-00280098032002842719260694623861077384350128460
50K-3000-203-63-003000105034003043743279198625561127384350136.8488
Series 27 ⌀127–159 mm rollers · 6305-2RS bearings · slotted holes 14 × 25 mm
Part numberBelt widthFL20°35°45°HBMass (kg)
CDCDCDRotatingTotal
⌀127 mm roller · bearing 6305-2RS
27K-450-127-63-0045019070056727452131847934420914010.421
27K-500-127-63-0050020075059627854832450335120914010.623
27K-600-127-63-0060024085071129165334760037920914012.326
27K-750-127-63-00750290100085531678538372042121616014.133
27K-900-127-63-0090034011509993339174118414572161601639
27K-1000-127-63-00100038012501114346102343493848521616017.742
27K-1050-127-63-00105039013001143350104944096249221616017.943
27K-1200-127-63-001200450145013163771207482110754222417519.950
27K-1350-127-63-001350500165014603941339510122757722417521.855
27K-1400-127-63-001400530170015464051418527130059822417523.258
27K-1500-127-63-001500560180016334151498545137261922417524.760
⌀133 mm roller · bearing 6305-2RS
27K-450-133-63-0045019070056728052132447935021514011.122
27K-500-133-63-0050020075059628454833050335721514011.324
27K-600-133-63-0060024085071129765335360038521514013.227
27K-750-133-63-00750290100085532278538972042722216015.234
27K-900-133-63-00900340115099933991741784146322216017.340
27K-1000-133-63-00100038012501114352102344093849122216019.143
27K-1050-133-63-00105039013001143356104944696249822216019.345
27K-1200-133-63-001200450145013163831207488110754823017521.551
27K-1350-133-63-001350500165014604001339516122758323017523.657
27K-1400-133-63-001400530170015464111418533130060423017525.260
27K-1500-133-63-001500560180016334211498551137262523017526.962
⌀152 mm roller · bearing 6305-2RS
27K-450-152-63-0045019070056729952134347936923414013.825
27K-500-152-63-0050020075059630354834950337623414014.126
27K-600-152-63-0060024085071131665337260040423414016.530
27K-750-152-63-00750290100085534178540872044624116019.138
27K-900-152-63-00900340115099935891743684148224116021.845
27K-1000-152-63-00100038012501114371102345993851024116024.148
27K-1050-152-63-00105039013001143375104946596251724116024.450
27K-1200-152-63-001200450145013164021207507110756724917527.357
27K-1350-152-63-00135050016501460419133953512276022491753064
27K-1400-152-63-001400530170015464301418552130062324917532.167
27K-1500-152-63-001500560180016334401498570137264424917534.270
⌀159 mm roller · bearing 6305-2RS
27K-450-159-63-0045019070056730652135047937624114013.825
27K-500-159-63-005002007505963105483565033832411401426
27K-600-159-63-0060024085071132365337960041124114016.530
27K-750-159-63-00750290100085534878541572045324816019.238
27K-900-159-63-0090034011509993659174438414892481602245
27K-1000-159-63-00100038012501114378102346693851724816024.449
27K-1050-159-63-00105039013001143382104947296252424816024.650
27K-1200-159-63-001200450145013164091207514110757425617527.558
27K-1350-159-63-001350500165014604261339542122760925617530.164
27K-1400-159-63-001400530170015464371418559130063025617532.567
27K-1500-159-63-001500560180016334471498577137265125617534.870
Series 30 ⌀127–159 mm rollers · 6206-2RS bearings · slotted holes 14 × 25 mm
Part numberBelt widthFL20°35°45°HBMass (kg)
CDCDCDRotatingTotal
⌀127 mm roller · bearing 6206-2RS
30K-600-127-62-0060024085071129965335460038621616012.133
30K-750-127-62-0075029010008553167853837204212161601437
30K-900-127-62-00900340115099934091741884146422417515.846
30K-1000-127-62-00100038012501114353102344193849222417517.549
30K-1050-127-62-00105039013001143357104944796249922417517.750
30K-1200-127-62-001200450145013163841207489110754923119019.758
30K-1350-127-62-001350500165014604021339517122758423119021.663
30K-1400-127-62-001400530170015464121418534130060523119023.171
30K-1500-127-62-001500560180016334221498552137262623119024.577
30K-1600-127-62-001600600200017484361603575146965523119025.385
30K-1800-127-62-001800660220019204631762616161470423820026.595
⌀133 mm roller · bearing 6206-2RS
30K-600-133-62-006002408507113056533606003922221601334
30K-750-133-62-00750290100085532278538972042722216015.138
30K-900-133-62-00900340115099934691742484147023017517.147
30K-1000-133-62-0010003801250111435910234479384982301751951
30K-1050-133-62-00105039013001143363104945396250523017519.151
30K-1200-133-62-001200450145013163901207495110755523719021.360
30K-1350-133-62-001350500165014604081339523122759023719023.465
30K-1400-133-62-00140053017001546418141854013006112371902573
30K-1500-133-62-001500560180016334281498558137263223719026.779
30K-1600-133-62-001600600200017484421603581146966123719027.588
30K-1800-133-62-001800660220019204691762622161471024420030.899
⌀152 mm roller · bearing 6206-2RS
30K-600-152-62-0060024085071132465337960041124116016.237
30K-750-152-62-0075029010008553417854087204462411601942
30K-900-152-62-00900340115099936591744384148924917521.651
30K-1000-152-62-0010003801250111437810234669385172491752456
30K-1050-152-62-00105039013001143382104947296252424917524.256
30K-1200-152-62-001200450145013164091207514110757425619027.166
30K-1350-152-62-001350500165014604271339542122760925619029.871
30K-1400-152-62-00140053017001546437141855913006302561903280
30K-1500-152-62-001500560180016334471498577137265125619034.186
30K-1600-152-62-001600600200017484611603600146968025619035.195
30K-1800-152-62-001800660220019204881762641161472926320039.4107
⌀159 mm roller · bearing 6206-2RS
30K-600-159-62-0060024085071133165338660041824816016.337
30K-750-159-62-0075029010008553487854157204532481601942
30K-900-159-62-00900340115099937291745084149625617521.751
30K-1000-159-62-00100038012501114385102347393852425617524.256
30K-1050-159-62-00105039013001143389104947996253125617524.457
30K-1200-159-62-001200450145013164161207521110758126319027.366
30K-1350-159-62-00135050016501460434133954912276162631903071
30K-1400-159-62-001400530170015464441418566130063726319032.380
30K-1500-159-62-001500560180016334541498584137265826319034.687
30K-1600-159-62-001600600200017484681603607146968726319035.695
30K-1800-159-62-001800660220019204951762648161473627020040108
Series 35 ⌀178–203 mm rollers · 6307-2RS bearings · slotted holes 18 × 30 mm
Part numberBelt widthFL20°35°45°HBMass (kg)
CDCDCDRotatingTotal
⌀178 mm roller · bearing 6307-2RS
35K-900-178-63-0090034011509993989174778415222821902964
35K-1000-178-63-00100038012501114412102349993855028219030.568
35K-1050-178-63-00105039013001143415104950596255728219030.869
35K-1200-178-63-001200450145013164351207540110760028219036.382
35K-1350-178-63-001350500165014604601339575122764228920039.797
35K-1400-178-63-001400530170015464701418593130066328920042.4102
35K-1500-178-63-001500560180016334801498610137268528920045.1107
35K-1600-178-63-001600600200017485081603647146972730323046.5113
35K-1800-178-63-001800660220019205281762681161476930323052137
35K-2000-178-63-002000740240021515561973727180782630323056.4163
35K-2100-178-63-002100765250022235642039741186784430323059169
35K-2400-178-63-002400870290025256212316823212193932428066214
⌀203 mm roller · bearing 6307-2RS
35K-900-203-63-00900340115099942391750284154730719035.370
35K-1000-203-63-0010003801250111443710235249385753071903976
35K-1050-203-63-00105039013001143440104953096258230719039.578
35K-1200-203-63-001200450145013164601207565110762530719044.190
35K-1350-203-63-001350500165014604851339600122766731420048.3106
35K-1400-203-63-001400530170015464951418618130068831420051.5111
35K-1500-203-63-001500560180016335051498635137271031420054.8117
35K-1600-203-63-001600600200017485331603672146975232823056.6124
35K-1800-203-63-001800660220019205531762706161479432823063.2146
35K-2000-203-63-002000740240021515811973752180785132823068.7175
35K-2100-203-63-002100765250022235892039766186786932823071.8182
35K-2400-203-63-002400870290025256462316848212196434928080.3227
Series 45 ⌀203 mm rollers · 6309-2RS bearings · slotted holes 18 × 30 mm
Part numberBelt widthFL20°35°45°HBMass (kg)
CDCDCDRotatingTotal
⌀203 mm roller · bearing 6309-2RS
45K-1500-203-63-00150056018001633524149864913727243282307.1158.3
45K-1600-203-63-001600600200017485541603693146977334928073.5175.5
45K-1800-203-63-001800660220019205751762727161481634928081.4216.6
45K-2000-203-63-002000740240021516021973773180787234928088.6236
45K-2100-203-63-002100765250022236112039788186789034928092.2243
45K-2400-203-63-0024008702800252564623168482121964349280103268
45K-2500-203-63-0025009002900261265723958652193985349280106.9297
45K-2600-203-63-00260093030002698667247488222661006349280108.8304
45K-2800-203-63-00280098032002842719260694623861077384350114436
45K-3000-203-63-003000105034003043743279198625561127384350122464
Series 60 ⌀250 mm rollers · 6312-2RS bearings · slotted holes 18 × 30 mm
Part numberBelt widthFL20°35°45°HBMass (kg)
CDCDCDRotatingTotal
⌀250 mm roller · bearing 6312-2RS
60K-1800-250-63-0018006602200192062217627741614863396280127295
60K-2000-250-63-0020007402400215164919738201807919396280137364
60K-2100-250-63-0021007652500222369320398701867972431350143421
60K-2400-250-63-00240087028002525729231693021211046431350160484
60K-2500-250-63-00250090029002612739239594721931068431350165518
60K-2600-250-63-00260093030002698749247496522661089431350167556
60K-2800-250-63-00280098032002842766260699323861124431350175598
60K-3000-250-63-0030001050340030437902791103325561174431350187636
ENGINEERED FOR THE APPLICATION

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