SS RF Ubwoko Bwohereza Iminyururu, hamwe na Attachements
Urunigi rw'ubwoko bwa RF
| GL Urunigi No. | Uruhare Andika | Imbaraga Zirenze | Ikibanza | Uruhare | Ubugari hagati yisahani yimbere | ||||||||
| R roller | Urupapuro | Urupapuro | M / N. | ||||||||||
| KN | P | D | E | D | K | E | e | Z | D | D | W | ||
| SSRF03075 | R / F / S. | 75 | 31.8 | 15.5 | 31.8 | 42 | 12 | 1.8 | 4.3 | 15.9 | - | 16.1 | |
| SSRF03100 | R / F / S. | 29.00 | 100 | ||||||||||
| SSRF430 | R / S. | 54.00 | 101.6 | 38.1 | 19 | - | - | - | - | - | 20.1 | - | 22.8 |
| SSRF05075 | S | 75 | |||||||||||
| SSRF05100 | R / F / S. | 69.00 | 100 | 40 | 19 | 40 | 50 | 14 | 2.5 | 4.5 | 22.2 | - | 22 |
| SSRF05150 | R / F / S. | 150 | |||||||||||
| SSRF204 | S | 78.00 | 66.27 | - | - | - | - | - | - | - | 22.2 | - | 27 |
| SSRF450 | R / F / S / M. | 78.00 | 101.6 | 44.5 | 23 | 44.5 | 55 | 18 | 2.5 | 6.5 | 22.2 | 25.4 | 27 |
| SSRF08150 | R / F / S / M. | 78.00 | 150 | 44.5 | 23 | 44.5 | 55 | 18 | 2.5 | 6.5 | 22.2 | 25.4 | 27 |
| SSRF650 | R / F / S / M. | 78.00 | 152.4 | 50.8 | 26 | 50.8 | 65 | 20 | 3 | 7 | 25.8 | 31.8 | 30.2 |
| SSRF10100 | R / S / M. | 100 | 50.8 | 27 | - | - | - | - | - | 29 | 31.8 | 30 | |
| SSRF10150 | R / F / S / M. | II o. UU | 150 | 50.8 | 65 | 20 | 3 | 7 | |||||
| SSRF214 | R / S / M. | 127.00 | 101.6 | 44.5 | 27 | - | - | - | - | - | 31.8 | 34.9 | 31.6 |
| SSRF205 | S | 127.00 | 78.11 | - | 31.8 | - | 37.1 | ||||||
| SSRF6205 | R / F / S / M. | 186.00 | 152.4 | 57.2 | 32 | 57.2 | 70 | 25 | 3.5 | 9 | 34.9 | 38.1 | 37.1 |
| SSRF12200 | R / F / S / M. | 200 | 65 | 32 | 65 | 80 | 24 | 4 | 8 | 34.9 | 38.1 | 37.1 | |
| SSRF12250 | R / F / S / M. | I oO.UU | 250 | ||||||||||
| SSRF212 | R / S / M. | 245.00 | 152.4 | 69.9 | 32.5 | - | - | - | - | - | 40.1 | 44.4 | 37.1 |
| SSRF17200 | R / F / S / M. | 200 | |||||||||||
| SSRF17250 | R / F / S / M. | 250 | 80 | 44 | 80 | 100 | 34 | 5 | 12 | 40.1 | 44.5 | 51.4 | |
| GL Urunigi No. | Ubwoko bw'Uruziga | Ultimate Tensile Imbaraga | Ikibanza | Uruhare | Ubugari hagati yisahani yimbere | ||||||||
| R roller | Urupapuro | Urupapuro | M / N. | ||||||||||
| KN | P | D | E | D | K | E | e | Z | D | D | W | ||
| SSRF17300 | R / F / S / M. | 245.00 | 300 | ||||||||||
| SSRF26200 | S / M. | 200 | - | - | - | - | - | - | - | ||||
| SSRF26250 | R / F / S / M. | 314.00 | 250 | ||||||||||
| SSRF26300 | R / F / S / M. | 300 | 100 | 50 | 100 | 125 | 38 | 6 | 13 | 44.5 | 50.8 | 57.2 | |
| SSRF26450 | R / F / S / M. | 450 | |||||||||||
| SSRF36250 | S / M. | 250 | - | - | - | - | - | - | - | ||||
| SSRF36300 | R / F / S / M. | 300 | 57.2 | 66.7 | |||||||||
| SSRF36450 | R / F / S / M. | 475.00 | 450 | 125 | 56 | 125 | 150 | 42 | 7 | 14 | 50.8 | ||
| SSRF36600 | R / F / S / M. | 600 | * | ||||||||||
| SSRF52300 | R / F / S. | 300 | |||||||||||
| SSRF52450 | R / F / S. | 500.00 | 450 | 140 | 65 | 140 | 170 | 49 | 8 | 16.5 | 57.2 | - | 77 |
| SSRF52600 | R / F / S. | 600 | |||||||||||
| SSRF60300 | R / F / N. | 300 | |||||||||||
| SSRF60350 | R / F / N. | 500.00 | 350 | 140 | 68 | 140 | 170 | 49 | 8 | 16.5- | 70 | 77 | |
| SSRF60400 | R / F / N. | 400 | |||||||||||
| SSRF90350 | N | 350 | - | - | - | - | - | - | - | ||||
| SSRF90400 | R / F / N. | 789.00 | 400 | 170 | 76 | 170 | 205 | 56 | 10 | 18 | - | 85 | 88 |
| SSRF90500 | R / F / N. | 500 | |||||||||||
| SSRF120400 | R / N. | 1100.00 | 400 | 200 | 87 | - | - | - | - | - | - | 100 | 100 |
| SSRF120600 | R / F / N. | 600 | 200 | 240 | 64 | 11.5 | 20.5 | ||||||
Urunigi rw'ubwoko bwa RF
| Isahani | Pin | Uburemere kuri metero | Umugereka Ubwoko | |||||||||||||
| H | T | d | L1 + L2 | L1 | L2 | R roller kg / m | Urupapuro kg / m | Urupapuro kg / m | M / N. kg / m | A-1 K-1 | A-2 K-2 | Weld A-2 | Weld A-3 | |||
| SA-2 SK-2 | G-2 | G-4 | ||||||||||||||
| 2.7 | 2.8 | 1.9 | 一 | |||||||||||||
| 22 | 3.2 | 8 | 38 | 18 | 20 | 2.3 | 2.4 | 1.7 | - | R / F / S. | R / F / S. | R / S. | ||||
| 25.4 | 4.8 (5.0) | 9.7 | 55 | 25.5 | 29.5 | 4.3 | 3.0 | R / S. | R / S. | R / S. | ||||||
| - | - | 4.2 | - | S | S | |||||||||||
| 32 | 4.5 | 11.3 | 53.5 | 25 | 28.5 | 5 | 5.2 | 3.7 | - | R / F / S. | R / F / S. | R / S. | R / S. | |||
| 4.1 | 4.1 | 3.2 | - | R / S / M. | ||||||||||||
| 28.6 | 6.3 (6.0) | 11.3 | 65.5 | 31 | 34.5 | - | - | 5.6 | - | S | S | |||||
| 28.6 | 6.3 (6.0) | 11.3 | 65.5 | 31 | 34.5 | 6.8 | 7.2 | 4.6 | 4.9 | R / F / S / M | R / F / S / M | R / S / M. | ||||
| 28.6 | 6.3 (6.0) | 11.3 | 65.5 | 31 | 34.5 | 5.5 | 5.6 | 4 | 4.2 | R / F / S / M | R / F / S / M | R / S / M. | ||||
| 38.1 | 6.3 (6.0) | 11.3 | 69 | 32.5 | 36.5 | 7.7 | 8.0 | 6 | 6.4 | R / F / S / M | R / F / S / M | R / S / M. | R / S / M. | S / M. | ||
| 38.1 | 6.3 | 14.5 | 69 | 33 | 36 | 9.8 | - | 6.8 | 7.1 | R / S / M. | R / S / M. | R / S / M. | ||||
| (6.0) | 79 | 8.1 | 5.9 | 6.1 | R / F / S / M | R / F / S / M | R / F / S / M | S / M. | ||||||||
| 38.1 | 7.9 | 15.9 | 77.5 | 37.5 | 40 | 10.4 | - | 8.7 | 9.1 | R / S / M. | R / S / M. | R / S / M. | ||||
| 38.1 | 7.9 | 15.9 | 83.5 | 40.5 | 43 | - | - | 10.4 | - | S | ||||||
| 44.5 | 7.9 | 15.9 | 83.5 | 40.5 | 43 | 12.1 | 12.4 | 9.3 | 9.6 | R / F / S / M | R / F / S / M | R / S / M. | R / F / S / M | S / M. | ||
| 44.5 | 7.9 | 15.9 | 83.5 | 40.5 | 43 | 11.4 | 11.9 | 8.4 | 8.7 | R / F / S / | R / F / S / | R / S / M. | R / F / S / | S / M. | ||
| 10.3 | 10.6 | 7.8 | 8.0 | M | M | M | ||||||||||
| 50.8 | 9.5 (10) | 19.1 | 95.5 | 44.5 | 51 | 17.1 | - | 12.6 | 13.1 | R / S / M. | R / S / M. | R / S / M. | ||||
| 50.8 | 9.5 | 19.1 | 109.5 | 51.5 | 58 | 18.8 | 19.8 | 12.3 | 12.6 | R / F / S / | R / F / S / | |||||
| (10) | 16.5 | 17.3 | 11.1 | 11.6 | M | M | R / F / S / M | S / M. | ||||||||
| Isahani | Pin | Uburemere kuri metero | Umugereka Ubwoko | ||||||||||||||||||||||||||||
| H | T | d | L1 + L2 | L1 | L2 | R roller kg / m | Urupapuro kg / m | Urupapuro kg / m | M / N. kg / m | A-1 K-1 | A-2 K-2 | Weld A-2 | Welded A-3 | SA-2 SK-2 | G-2 | G-4 | |||||||||||||||
| 50.8 | 9.5 (10) | 19.1 | 109.5 | 51.5 | 58 | 15 | 15.7 | 10.5 | 10.9 | R / F / S / M | R / S. | R / F / S / M | |||||||||||||||||||
| - | - | 16 | 17 | R / S / M. | S / M. | ||||||||||||||||||||||||||
| 9.5 (10) | 25.3 | 26.2 | 14.7 | 15.5 | R / F / S / M | S / M. | |||||||||||||||||||||||||
| 63.5 | 22.2 | 116.5 | 55.5 | 61 | 22.3 | 23.6 | 13.8 | 14.5 | R / F / S / M. R / F / S / M | S / M. | |||||||||||||||||||||
| 18 | 18.9 | 12.4 | 12.9 | R / F / S / M | R / S. | ||||||||||||||||||||||||||
| - | - | 24.4 | 25.5 | S / M. | |||||||||||||||||||||||||||
| 39 | 40.1 | 22.9 | 23.8 | R / F / S / M R / F / S / M | S / M. | ||||||||||||||||||||||||||
| 76.2 | 12.7 | 25.4 | 146 | 68 | 78 | 30.7 | 31.9 | 20.2 | 20.8 | R / F / S / M. | R / F / S / M | ||||||||||||||||||||
| 26.9 | 27.8 | 19 | 19.5 | R / F / S / M | R / F / S / M | R / F / S / M | |||||||||||||||||||||||||
| 48.8 | 52.5 | 29.7 | - | R / F / S. | |||||||||||||||||||||||||||
| 76.2 | 16 | 31.8 | 172 | 82 | 90 | 37.5 | 39.3 | 26.2 | - | R / F / S. | R / F. | R / F / S. | |||||||||||||||||||
| 32.9 | 34.3 | 24.4 | - | R / F / S. | R / F. | R / F / S. | |||||||||||||||||||||||||
| 52.4 | 55.1 | - | 31 | R / F / N. | |||||||||||||||||||||||||||
| 90 | 12.7 | 35 | 160.5 | 77 | 83.5 | 47.2 | 49.5 | - | 28.8 | R / F / N. | R / F / N. | ||||||||||||||||||||
| 43.8 | 45.8 | - | 27.7 | R / F / N. | R / F / N. | ||||||||||||||||||||||||||
| - | - | - | 47.6 | N | |||||||||||||||||||||||||||
| 110 | 16 | 42 | 189.5 | 89.5 | 100 | 71 | 74.4 | - | 45.1 | R / F / N. | |||||||||||||||||||||
| 62.3 | 65 | - | 41.6 | R / F / N. | R / F / N. | ||||||||||||||||||||||||||
| 105.7 | 一 | - | 63.9 | R / N. | |||||||||||||||||||||||||||
| 130 | 19 | 50 0 | 218.5 | 105.5 | 13 | ||||||||||||||||||||||||||
| 83.3 | 88 | - | 55.4 | R / F / N. | R / F / N. | ||||||||||||||||||||||||||
Ubwoko bwa convoyeur ya RF hamwe numugereka
| GLChain No. | Ikibanza P | Igipimo cy'umugereka | Icyuma Inguni | Bolt Igipimo | Uburemere bwa A att. | |||||
| h4 | 2 / F. | 2 / W. | L | G | d4 | KG | ||||
| RF17300 | 300 | 45 | 75 | 111 | 180 | 220 | 15 | L65 * 65 * 6 | M12 | 1.34 |
| RF26300 | 300 | 55 | 80 | 124 | 180 | 220 | 15 | L75 * 75 * 9 | M12 | 2.22 |
| RF60300 | 300 | 90 | 115 | 165 | 110 | 160 | 24 | L100 * 100 * 13 | M20 | 3.30 |
| RF90350 | 350 | 100 | 140 | 210 | 100 | 180 | 28 | 1130 * 130 * 15 | M24 | 5.20 |
| RF90400 | 400 | 100 | 140 | 210 | 150 | 230 | 28 | L130 * 130 * 15 | M24 | 6.60 |
| RF120400 | 400 | 120 | 150 | 220 | 120 | 200 | 28 | L130 * 130 * 15 | M24 | 5.80 |
| RF26450 | 450 | 55 | 80 | 124 | 140 | 320 | 15 | L75 * 75 * 9 | M14 | 3.26 |
| RF36450 | 450 | 70 | 100 | 160 | 140 | 330 | 19 | L100 * 100 * 10 | M16 | 5.07 |
| RF36600 | 600 | 70 | 100 | 160 | 180 | 410 | 19 | L100 * 100 * 10 | M16 | 6.26 |
| RF54450 | 450 | 80 | 120 | 171 | 140 | 330 | 24 | L100 * 100 * 13 | M20 | 6.30 |
| RF52600 | 600 | 80 | 120 | 171 | 180 | 410 | 24 | L100 * 100 * 13 | M20 | 7.80 |
| RF60350 | 350 | 90 | 115 | 165 | 80 | 220 | 24 | L100 * 100 * 13 | M20 | 4.20 |
| RF60400 | 400 | 90 | 115 | 165 | 100 | 260 | 24 | L100 * 100 * 13 | M20 | 6.00 |
| RF90500 | 500 | 100 | 140 | 210 | 130 | 340 | 28 | L130 * 130 * 15 | M24 | 9.80 |
| RF120600 | 600 | 120 | 150 | 220 | 160 | 400 | 28 | L130 * 130 * 15 | M24 | 11.50 |
| GL Urunigi No. | Ikibanza | Igipimo cy'umugereka | Inguni y'icyuma | Bolt | ||||||
| Igipimo | ||||||||||
| P | K | T | Q1 | Q2 | A | 0 | Ihuza ryo hanze | Ihuza ryimbere | ||
| RF15100 | 100 | 40 | 4.5 | 26.2 | 21.0 | 15 | 10 | 36 | 26 | M8 |
| RF05150 | 150 | 60 | 4.5 | 26.2 | 21.0 | 15 | 10 | 36 | 26 | M8 |
| RF650 | 152.4 | 60 | 6.3 | 28.5 | 21.5 | 20 | 12 | 49 | 35 | M10 |
| RF10100 | 100 | 30 | 6.3 | 28.5 | 21.5 | 20 | 12 | 49 | 35 | M10 |
| RF10150 | 150 | 60 | 6.3 | 28.5 | 21.5 | 20 | 12 | 49 | 35 | M10 |
| RF6205 | 152.4 | 50 | 7.9 | 35.5 | 26.5 | 26 | 15 | 63 | 45 | M12 |
| RF12200 | 200 | 80 | 7.9 | 35.5 | 26.5 | 26 | 15 | 63 | 45 | M12 |
| RF12250 | 250 | 125 | 7.9 | 35.5 | 26.5 | 26 | 15 | 63 | 45 | M12 |
| RF17200 | 200 | 70 | 9.5 | 45.5 | 35.0 | 26 | 15 | 81 | 61 | M12 |
| RF17250 | 250 | 110 | 9.5 | 45.5 | 35.0 | 26 | 15 | 81 | 61 | M12 |
| RF17300 | 300 | 150 | 9.5 | 45.5 | 35.0 | 26 | 15 | 81 | 61 | M12 |
| RF26300 | 300 | 140 | 9.5 | 48.0 | 35.0 | 26 | 15 | 88 | 67 | M12 |
| RF26450 | 450 | 220 | 9.5 | 48.0 | 35.0 | 26 | 15 | 88 | 67 | M12 |
| RF36450 | 450 | 220 | 12.7 | 60.0 | 46.0 | 32 | 19 | 105 | 75 | M16 |
| RF36600 | 600 | 300 | 12.7 | 60.0 | 46.0 | 32 | 19 | 105 | 75 | M16 |
| RF52450 | 450 | 200 | 12.7 | 71.5 | 45.5 | 38 | 24 | 125 | 90 | M20 |
| RF52600 | 600 | 300 | 16.0 | 71.5 | 45.5 | 38 | 24 | 125 | 90 | M20 |
Ubwoko bwa convoyeur ya RF hamwe numugereka
| GL Urunigi No. | Ikibanza | Igipimo cy'umugereka | Bolt Igipimo | Uburemere bwumugereka SA2 | |||||||
| P | C | F | Q1 | Q2 | L | G | T | d4 | KG | ||
| RF03075 | 75 | 33 | 49.0 | 15.5 | 11.5 | 30.0 | 55 | 3.2 | 10 | M8 | 0.05 |
| RF03100 | 100 | 33 | 49.0 | 15.5 | 11.5 | 40.0 | 65 | 3.2 | 10 | M8 | 0.06 |
| RF430 | 101.6 | 37.6 | 51.6 | 22.0 | 16.0 | 40.0 | 70 | 4.8 | 12 | M10 | 0.11 |
| RF05100 | 100 | 33.4 | 50.7 | 21.0 | 15.5 | 40.0 | 65 | 4.5 | 10 | M8 | 0.08 |
| RF05150 | 150 | 33.4 | 50.7 | 21.0 | 15.5 | 60.0 | 85 | 4.5 | 10 | M8 | 0.10 |
| RF450 | 101.6 | 47.6 | 60.7 | 27.0 | 20.0 | 40.0 | 70 | 6.3 | 12 | M10 | 0.18 |
| RF08150 | 150 | 46.1 | 58.7 | 27.0 | 20.0 | 60.0 | 90 | 6.3 | 12 | M10 | 0.22 |
| RF650 | 152.4 | 50 | 63.0 | 28.5 | 21.5 | 60.0 | 90 | 6.3 | 12 | M10 | 0.22 |
| RF10100 | 100 | 46.1 | 61.0 | 28.5 | 21.5 | 40.0 | 70 | 6.3 | 12 | M10 | 0.16 |
| RF10150 | 150 | 46.1 | 61.0 | 28.5 | 21.5 | 60.0 | 90 | 6.3 | 12 | M10 | 0.20 |
| RF210 | 101.6 | 50 | 70.0 | 32.5 | 23.6 | 40.0 | 80 | 7.9 | 15 | M12 | 0.28 |
| RF6205 | 152.4 | 55 | 75.7 | 35.5 | 26.5 | 50.0 | 100 | 7.9 | 15 | M12 | 0.37 |
| RF12200 | 200 | 55 | 75.7 | 35.5 | 26.5 | 70.0 | 120 | 7.9 | 15 | M12 | 0.45 |
| RF12250 | 250 | 55 | 75.7 | 35.5 | 26.5 | 125.0 | 165 | 7.9 | 15 | M12 | 0.62 |
| RF212 | 152.4 | 60 | 83.6 | 38.0 | 28.0 | 60.0 | 100 | 9.5 | 15 | M12 | 0.49 |
| GL Urunigi No. | Ubwoko bw'Uruziga | Ikibanza | Igipimo cy'umugereka | Bolt Igipimo | Uburemere bwumugereka SA2 | ||||||||
| P | h4 | 2 / F. | F | 2W | W | L | T | d4 | KG | ||||
| RF0375 | R / F / S. | 75 | 20 | 30 | 60 | 46 | 92 | 30 | 55 | 3.2 | 10 | M8 | 0.05 |
| RF03100 | R / F / S. | 100 | 20 | 30 | 60 | 46 | 92 | 40 | 65 | 3.2 | 10 | M8 | 0.06 |
| RF430 | R / S. | 101.6 | 22 | 40 | 80 | 54 | 108 | 40 | 70 | 4.8 (5.0) | 12 | M10 | 0.11 |
| RF05075 | S | 75 | 22 | 35 | 70 | 47 | 94 | 30 | 55 | 4.5 | 10 | M8 | 0.07 |
| RF05100 | R / F / S. | 100 | 22 | 35 | 70 | 47 | 94 | 40 | 65 | 4.5 | 10 | M8 | 0.08 |
| RF05150 | R / F / S. | 150 | 22 | 35 | 70 | 47 | 94 | 60 | 85 | 4.5 | 10 | M8 | 0.10 |
| RF204 | S | 66.27 | 24 | 45 | 90 | 59 | 118 | - | 35 | 6.3 (6.0) | 12 | M10 | 0.08 |
| RF450 | R / F / S / M. | 101.6 | 28 | 50 | 100 | 64 | 128 | 40 | 70 | 6.3 (6.0) | 12 | M10 | 0.18 |
| RF08150 | R / F / S / M. | 150 | 28 | 50 | 100 | 64 | 128 | 60 | 90 | 6.3 (6.0) | 12 | M10 | 0.22 |
| RF650 | R / F / S / M. | 152.4 | 32 | 50 | 100 | 64 | 128 | 60 | 90 | 6.3 (6.0) | 12 | M10 | 0.22 |
| RF10100 | R / S / M. | 100 | 28 | 50 | 100 | 65 | 130 | 40 | 70 | 6.3 (6.0) | 12 | M10 | 0.16 |
| RF10150 | R / F / S / M. | 150 | 28 | 50 | 100 | 65 | 130 | 60 | 90 | 6.3 (6.0) | 12 | M10 | 0.20 |
| RF214 | R / S / M. | 101.6 | 35 | 55 | 110 | 73 | 146 | 40 | 80 | 7.9 | 15 | M12 | 0.28 |
| RF205 | S | 78.11 | 35 | 60 | 120 | 75 | 150 | 30 | 65 | 7.9 | 12 | M10 | 0.23 |
| RF6205 | R / F / S / M. | 152.4 | 38 | 60 | 120 | 79 | 158 | 60 | 100 | 7.9 | 15 | M12 | 0.37 |
| RF12200 | R / F / S / M. | 200 | 38 | 60 | 120 | 79 | 158 | 80 | 120 | 7.9 | 15 | M12 | 0.45 |
| RF12250 | R / F / S / M. | 250 | 38 | 60 | 120 | 79 | 158 | 125 | 170 | 7.9 | 15 | M12 | 0.62 |
| RF212 | R / S / M. | 152.4 | 45 | 65 | 130 | 83 | 166 | 60 | 100 | 9.5 (10.0) | 15 | M12 | 0.49 |
| RF17200 | R / F / S / M. | 200 | 45 | 75 | 150 | 98 | 196 | 80 | 120 | 9.5 (10.0) | 15 | M12 | 0.66 |
| RF17250 | R / F / S / M. | 250 | 45 | 75 | 150 | 98 | 125 | 125 | 170 | 9.5 (10.0) | 15 | M12 | 0.86 |
Iminyururu ya SS RF Ubwoko Ibicuruzwa bifite ibiranga kurwanya ruswa, kurwanya ubushyuhe buke kandi buke, isuku nibindi. Irashobora gukoreshwa mubihe byinshi nko gutwara horizontal, ubwikorezi buhengamye, ubwikorezi buhagaze nibindi. Irakwiriye kumurongo wibyuma byikora byimashini zibiribwa, imashini zipakira nibindi.
Icyitonderwa: Urupapuro rwa S, M na N:
Diameter yo hanze ya S, M andn umuzingo uri munsi yuburebure bwa plaque ihuza kandi irasobanurwa bitewe na progaramu. M Roller nini nini kuruta S Roller, ariko ubunini bungana nubunini bwa N Roller .Ku munyururu hamwe na N Roller, diameter ya PIN ni nini cyane kurenza urunigi rwa M Roller.
