Four-point contact ball bearing is comprised of an outer ring and an inner ring in integral structure or split structure. The two split rings of bearings in split structure are bolted together before delivery. Usually cages or spacers can be found in four-point contact ball bearings. In addition, bearings in full-filled ball structure is used only for large loads, thereby the full-filled ball structure bearings features good loading capacity and larger friction, the latter may result in scratches on the contact balls.
Range of external diameter: 300 mm to 10000 mm
Ring material: 42CrMo / 50Mn/ C45
Ball/roller material: GCr15
Cage material: steel 20 or ZL102 cast aluminum alloy
Spacer material: nylon 6 / nylon 66
Quenching hardness of raceway: HRC55-62
Tooth type: no gear, internal gear, external gear
Delivery time: 10-30 days
Overview of Customized Size Four Point Contact Inner Tooth Slewing Bearings
LTZC Four point contact ball slewing bearing composed of inner ring, outer ring, rolling element and isolation block. The steel ball is in contact with the arc raceway at four points, and can withstand the combined load of axial force, radial force and overturning moment at the same time. According to the needs of customers, the ring gear with toothless, internal or external teeth can be selected respectively, which is more convenient to install and use. If higher speeds are required, a structure with a disc cage can also be used. There are usually three series: 0.11, 012, and 0.13.
Features of Customized Size Four Point Contact Inner Tooth Slewing Bearings
LTZC four point contact ball slewing bearing has the characteristics of compact structure, high precision, flexible rotation and long service life
Applications of Customized Size Four Point Contact Inner Tooth Slewing Bearings
LTZC bearings are widely used in steel, port crane, engineering machinery, radar, shield machine, radio telescope and other fields.
Supplier of Customized Size Four Point Contact Inner Tooth Slewing Bearings
As a well-known supplier of slewing bearings with 30 years’ experience, LTZC bearings is committed to providing slewing bearings with high quality and low price. The specific price needs to be comprehensively evaluated according to the size, load, material and accuracy requirements of the bearings. Please contact us if necessary.
Custom Bearings
Our dedicated team is on hand to provide help and expertise throughout the process. Whether you are ordering from our standard range of products or you want a tailored solution for your current project, they are ready to help you every step of the way.
Bearing Model | Dimensions | Mounting Dimensions | Structural Dimension | Gear data | weight (kg) | |||||||||||||||
Dmm | dmm | Hmm | D1mm | D2mm | n | mm | dmmm | Lmm | n1 | D3mm | d1mm | HImm | hmm | bmm | x | Mmm | Demm | z | ||
013.25.315 | 408 | 222 | 70 | 372 | 258 | 20 | 18 | M16 | 32 | 2 | 316 | 314 | 60 | 10 | 50 | 0 | 5 | 190 | 40 | 49 |
013.25.355 | 448 | 262 | 70 | 412 | 298 | 20 | 18 | M16 | 32 | 2 | 356 | 354 | 60 | 10 | 50 | 0 | 5 | 235 | 49 | 54 |
013.25.400 | 493 | 307 | 70 | 457 | 343 | 20 | 18 | M16 | 32 | 2 | 401 | 399 | 60 | 10 | 50 | 0 | 6 | 276 | 48 | 62 |
013.25.450 | 543 | 357 | 70 | 507 | 393 | 20 | 18 | M16 | 32 | 2 | 451 | 449 | 60 | 10 | 50 | 0 | 6 | 324 | 56 | 71 |
013.30.500 | 602 | 398 | 80 | 566 | 434 | 20 | 18 | M16 | 32 | 4 | 501 | 498 | 70 | 10 | 60 | 0.5 | 5 | 367 | 74 | 85 |
014.30.500 | 6 | 368.4 | 62 | |||||||||||||||||
013.25.500 | 602 | 398 | 80 | 566 | 434 | 20 | 18 | M16 | 32 | 4 | 501 | 499 | 70 | 10 | 60 | 0.5 | 5 | 367 | 74 | 85 |
014.25.500 | 6 | 368.4 | 62 | |||||||||||||||||
013.30.560 | 662 | 458 | 80 | 626 | 494 | 20 | 18 | M16 | 32 | 4 | 561 | 558 | 70 | 10 | 60 | 0.5 | 5 | 427 | 86 | 95 |
014.30.560 | 6 | 428.4 | 72 | |||||||||||||||||
013.25.560 | 662 | 458 | 80 | 626 | 494 | 20 | 18 | M16 | 32 | 4 | 561 | 559 | 70 | 10 | 60 | 0.5 | 5 | 427 | 86 | 95 |
014.25.560 | 6 | 428.4 | 72 | |||||||||||||||||
013.30.630 | 732 | 528 | 80 | 696 | 564 | 24 | 18 | M16 | 32 | 4 | 631 | 628 | 70 | 10 | 60 | 0.5 | 6 | 494.4 | 83 | 110 |
014.30.630 | 8 | 491.2 | 62 | |||||||||||||||||
013.25.630 | 732 | 528 | 80 | 696 | 564 | 24 | 18 | M16 | 32 | 4 | 631 | 629 | 70 | 10 | 60 | 0.5 | 6 | 494.4 | 83 | 110 |
014.25.630 | 8 | 491.2 | 62 | |||||||||||||||||
013.30.710 | 812 | 608 | 80 | 776 | 644 | 24 | 18 | M16 | 32 | 4 | 711 | 708 | 70 | 10 | 60 | 0.5 | 6 | 572.4 | 96 | 120 |
014.30.710 | 8 | 571.2 | 72 | |||||||||||||||||
013.25.710 | 812 | 608 | 80 | 776 | 644 | 24 | 18 | M16 | 32 | 4 | 711 | 709 | 70 | 10 | 60 | 0.5 | 6 | 572.4 | 96 | 120 |
014.25.710 | 8 | 571.2 | 72 | |||||||||||||||||
013.40.800 | 922 | 678 | 100 | 878 | 722 | 30 | 22 | M20 | 40 | 6 | 801 | 798 | 90 | 10 | 80 | 0.5 | 8 | 635.2 | 80 | 220 |
014.40.800 | 10 | 634 | 64 | |||||||||||||||||
013.30.800 | 922 | 678 | 100 | 878 | 722 | 30 | 22 | M20 | 40 | 6 | 801 | 798 | 90 | 10 | 80 | 0.5 | 8 | 635.2 | 80 | 220 |
014.30.800 | 10 | 634 | 64 | |||||||||||||||||
013.40.900 | 1022 | 778 | 100 | 978 | 822 | 30 | 22 | M20 | 40 | 6 | 901 | 898 | 90 | 10 | 80 | 0.5 | 8 | 739.2 | 93 | 240 |
014.40.900 | 10 | 734 | 74 | |||||||||||||||||
013.30.900 | 1022 | 778 | 100 | 978 | 822 | 30 | 22 | M20 | 40 | 6 | 901 | 898 | 90 | 10 | 80 | 0.5 | 8 | 739.2 | 93 | 240 |
014.30.900 | 10 | 734 | 74 | |||||||||||||||||
013.40.1000 | 1122 | 878 | 100 | 1078 | 922 | 36 | 22 | M20 | 40 | 6 | 1001 | 998 | 90 | 10 | 80 | 0.5 | 10 | 824 | 83 | 270 |
014.40.1000 | 12 | 820.8 | 69 | |||||||||||||||||
013.30.1000 | 1122 | 878 | 100 | 1078 | 922 | 36 | 22 | M20 | 40 | 6 | 1001 | 998 | 90 | 10 | 80 | 0.5 | 10 | 824 | 83 | 270 |
014.30.1000 | 12 | 820.8 | 69 | |||||||||||||||||
013.40.1120 | 1242 | 998 | 100 | 1198 | 1042 | 36 | 22 | M20 | 40 | 6 | 1121 | 1118 | 90 | 10 | 80 | 0.5 | 10 | 944 | 95 | 300 |
014.40.1120 | 12 | 940.8 | 79 | |||||||||||||||||
013.30.1120 | 1242 | 998 | 100 | 1198 | 1042 | 36 | 22 | M20 | 40 | 6 | 1121 | 1118 | 90 | 10 | 80 | 0.5 | 10 | 944 | 95 | 300 |
014.30.1120 | 12 | 940.8 | 79 | |||||||||||||||||
013.45.1250 | 1390 | 1110 | 110 | 1337 | 1163 | 40 | 26 | M24 | 48 | 5 | 1252 | 1248 | 100 | 10 | 90 | 0.5 | 12 | 1049 | 88 | 420 |
014.45.1250 | 14 | 1042 | 75 | |||||||||||||||||
013.35.1250 | 1390 | 1110 | 110 | 1337 | 1163 | 40 | 26 | M24 | 48 | 5 | 1251 | 1248 | 100 | 10 | 90 | 0.5 | 12 | 1049 | 88 | 420 |
014.35.1250 | 14 | 11042 | 75 |
Bearing Model | Dimensions | Mounting Dimensions | Structural Dimension | Gear data | weight (kg) | |||||||||||||||
Dmm | dmm | Hmm | D1mm | D2mm | n | omm | dmmm | Lmm | n1 | D3mm | d1mm | H1mm | hmm | bmm | x | Mmm | Demm | z | ||
011.45.1400 | 1540 | 1260 | 110 | 1487 | 1313 | 40 | 26 | M24 | 48 | 5 | 1402 | 1398 | 100 | 10 | 90 | 0.5 | 12 | 1605.6 | 131 | 480 |
012.45.1400 | 14 | 1607.2 | 112 | |||||||||||||||||
011.35.1400 | 1540 | 1260 | 110 | 1487 | 1313 | 40 | 26 | M24 | 48 | 5 | 1401 | 1398 | 100 | 10 | 90 | 0.5 | 12 | 1605.6 | 131 | 480 |
012.35.1400 | 14 | 1607.2 | 112 | |||||||||||||||||
011.45.1600 | 1740 | 1460 | 110 | 1687 | 1513 | 45 | 26 | M24 | 48 | 5 | 1602 | 1598 | 100 | 10 | 90 | 0.5 | 14 | 1817.2 | 127 | 550 |
012.45.1600 | 16 | 1820.8 | 111 | |||||||||||||||||
011.35.1600 | 1740 | 1460 | 110 | 1687 | 1513 | 45 | 26 | M24 | 48 | 5 | 1601 | 1598 | 100 | 10 | 90 | 0.5 | 14 | 1817.2 | 127 | 550 |
012.35.1600 | 16 | 1820.8 | 111 | |||||||||||||||||
011.45.1800 | 1940 | 1660 | 110 | 1887 | 1713 | 45 | 26 | M24 | 48 | 5 | 1802 | 1798 | 100 | 10 | 90 | 0.5 | 14 | 2013.2 | 141 | 610 |
012.45.1800 | 16 | 2012.8 | 123 | |||||||||||||||||
011.35.1800 | 1940 | 1660 | 110 | 1887 | 1713 | 45 | 26 | M24 | 48 | 5 | 1801 | 1798 | 100 | 10 | 90 | 0.5 | 14 | 2013.2 | 141 | 610 |
012.35.1800 | 16 | 2012.8 | 123 | |||||||||||||||||
011.60.2000 | 2178 | 1825 | 144 | 2110 | 1891 | 48 | 33 | M30 | 60 | 8 | 2002 | 1998 | 132 | 12 | 120 | 0.5 | 16 | 2268.8 | 139 | 1100 |
012.60.2000 | 18 | 2264.4 | 123 | |||||||||||||||||
011.40.2000 | 2178 | 1825 | 144 | 2110 | 1891 | 48 | 33 | M30 | 60 | 8 | 2001 | 1998 | 132 | 12 | 120 | 0.5 | 16 | 2268.8 | 139 | 1100 |
012.40.2000 | 18 | 2264.4 | 123 | |||||||||||||||||
011.60.2240 | 2418 | 2065 | 144 | 2350 | 2131 | 48 | 33 | M30 | 60 | 8 | 2242 | 2238 | 132 | 12 | 120 | 0.5 | 16 | 2492.8 | 153 | 1250 |
012.60.2240 | 18 | 2498.4 | 136 | |||||||||||||||||
011.40.2240 | 2418 | 2065 | 144 | 2350 | 2131 | 48 | 33 | M30 | 60 | 8 | 2241 | 2238 | 132 | 12 | 120 | 0.5 | 16 | 2492.8 | 153 | 1250 |
012.40.2240 | 18 | 2498.4 | 136 | |||||||||||||||||
011.60.2500 | 2678 | 2325 | 144 | 2610 | 2391 | 56 | 33 | M30 | 60 | 8 | 2502 | 2498 | 132 | 12 | 120 | 0.5 | 18 | 2768.4 | 151 | 1400 |
012.60.2500 | 20 | 2776 | 136 | |||||||||||||||||
011.40.2500 | 2678 | 2325 | 144 | 2610 | 2391 | 56 | 33 | M30 | 60 | 8 | 2501 | 2498 | 132 | 12 | 120 | 0.5 | 18 | 2768.4 | 151 | 1400 |
012.40.2500 | 20 | 2776 | 136 | |||||||||||||||||
011.60.2800 | 2978 | 2625 | 144 | 2910 | 2691 | 56 | 33 | M30 | 60 | 8 | 2802 | 2798 | 132 | 12 | 120 | 0.5 | 18 | 3074.4 | 168 | 1600 |
012.60.2800 | 20 | 3076 | 151 | |||||||||||||||||
011.40.2800 | 2978 | 2625 | 144 | 2910 | 2691 | 56 | 33 | M30 | 60 | 8 | 2802 | 2798 | 132 | 12 | 120 | 0.5 | 18 | 3074.4 | 168 | 1600 |
012.40.2800 | 20 | 3076 | 151 | |||||||||||||||||
011.75.3150 | 3376 | 2922 | 174 | 3286 | 3014 | 56 | 45 | M42 | 84 | 8 | 3152 | 3147 | 162 | 12 | 150 | 0.5 | 20 | 3476 | 171 | 2800 |
012.75.3150 | 22 | 3471.6 | 155 | |||||||||||||||||
011.50.3150 | 3376 | 2922 | 174 | 3286 | 3014 | 56 | 45 | M42 | 84 | 8 | 3152 | 3147 | 162 | 12 | 150 | 0.5 | 20 | 3476 | 171 | 2800 |
012.50.3150 | 22 | 3471.6 | 155 | |||||||||||||||||
011.75.3550 | 3776 | 3322 | 174 | 3686 | 3014 | 56 | 45 | M42 | 84 | 8 | 3552 | 3547 | 162 | 12 | 150 | 0.5 | 20 | 3876 | 191 | 3500 |
012.75.3550 | 22 | 3889.6 | 174 | |||||||||||||||||
011.50.3550 | 3776 | 3322 | 174 | 3686 | 3014 | 56 | 45 | M42 | 84 | 10 | 3552 | 3548 | 162 | 12 | 150 | 0.5 | 20 | 3876 | 191 | 3500 |
012.50.3550 | 22 | 3889.6 | 174 | |||||||||||||||||
011.75.4000 | 4226 | 3772 | 174 | 4136 | 3864 | 60 | 45 | M42 | 84 | 10 | 4002 | 3997 | 162 | 12 | 150 | 0.5 | 22 | 4329.6 | 194 | 4200 |
012.75.4000 | 25 | 4345 | 171 | |||||||||||||||||
011.50.4000 | 4226 | 3772 | 174 | 4136 | 3864 | 60 | 45 | M42 | 84 | 10 | 4002 | 3998 | 162 | 12 | 150 | 0.5 | 22 | 4329.6 | 194 | 4200 |
012.50.4000 | 25 | 4345 | 171 | |||||||||||||||||
011.75.4500 | 4726 | 4272 | 174 | 4636 | 4364 | 60 | 45 | M42 | 84 | 10 | 4502 | 4497 | 162 | 12 | 150 | 0.5 | 22 | 4835.6 | 217 | 5100 |
012.75.4500 | 25 | 4845 | 191 | |||||||||||||||||
011.50.4500 | 4726 | 4272 | 174 | 4636 | 4364 | 60 | 45 | M42 | 84 | 10 | 4502 | 4498 | 162 | 12 | 150 | 0.5 | 22 | 4835.6 | 217 | 5100 |
012.50.4500 | 25 | 4845 | 191 |
Bearing Model | Dimensions | Mounting Dimensions | Structural Dimension | weight (kg) | |||||||||||
Dmm | dmm | Hmm | D1mm | D2mm | n | mm | dmmm | Lmm | n1 | D3mm | d1mm | H1mm | hmm | ||
010.20.200 | 280 | 120 | 60 | 248 | 152 | 12 | 16 | M14 | 28 | 2 | 201 | 199 | 50 | 10 | 20 |
010.20.224 | 304 | 144 | 60 | 272 | 176 | 12 | 16 | M14 | 28 | 2 | 225 | 223 | 50 | 10 | 22 |
010.20.250 | 330 | 170 | 60 | 298 | 202 | 18 | 16 | M14 | 28 | 2 | 251 | 249 | 50 | 10 | 25 |
010.20.280 | 360 | 200 | 60 | 328 | 232 | 18 | 16 | M14 | 28 | 2 | 281 | 279 | 50 | 10 | 28 |
010.25.315 | 408 | 222 | 70 | 372 | 258 | 20 | 18 | M16 | 32 | 2 | 316 | 314 | 60 | 10 | 44 |
010.25.355 | 448 | 262 | 70 | 412 | 298 | 20 | 18 | M16 | 32 | 2 | 356 | 354 | 60 | 10 | 49 |
010.25.400 | 493 | 307 | 70 | 457 | 343 | 20 | 18 | M16 | 32 | 2 | 401 | 399 | 60 | 10 | 56 |
010.25.450 | 543 | 357 | 70 | 507 | 393 | 20 | 18 | M16 | 32 | 2 | 451 | 449 | 60 | 10 | 62 |
010.30.500 | 602 | 398 | 80 | 566 | 434 | 20 | 18 | M16 | 32 | 4 | 501 | 498 | 70 | 10 | 85 |
01025.500 | 1602 | 398 | 80 | 566 | 434 | 20 | 18 | M16 | 32 | 4 | 501 | 499 | 70 | 10 | 85 |
010.30.560 | 662 | 458 | 80 | 626 | 494 | 20 | 18 | M16 | 32 | 4 | 561 | 558 | 70 | 10 | 95 |
010.25.560 | 662 | 458 | 80 | 626 | 494 | 20 | 18 | M16 | 32 | 4 | 561 | 559 | 70 | 10 | 95 |
010.30.630 | 732 | 528 | 80 | 696 | 564 | 24 | 18 | M16 | 32 | 4 | 631 | 628 | 70 | 10 | 110 |
010.25.630 | I732 | 528 | 80 | 696 | 564 | 24 | 18 | M16 | 32 | 4 | 631 | 629 | 70 | 10 | 110 |
010.30.710 | 812 | 608 | 80 | 776 | 644 | 24 | 18 | M16 | 32 | 4 | 711 | 708 | 70 | 10 | 120 |
010.25.710 | 812 | 608 | 80 | 776 | 644 | 24 | 18 | M16 | 32 | 4 | 711 | 709 | 70 | 10 | 120 |
010.40.800 | 922 | 678 | 100 | 878 | 722 | 30 | 22 | M20 | 40 | 6 | 801 | 798 | 90 | 10 | 220 |
010.30.800 | 922 | 678 | 100 | 878 | 722 | 30 | 22 | M20 | 40 | 6 | 801 | 798 | 90 | 10 | 220 |
010.40.900 | 1022 | 778 | 100 | 978 | 822 | 30 | 22 | M20 | 40 | 6 | 901 | 898 | 90 | 10 | 240 |
010.30.900 | 1022 | 778 | 100 | 978 | 822 | 30 | 22 | M20 | 40 | 6 | 901 | 898 | 90 | 10 | 240 |
010.40.1000 | 1122 | 878 | 100 | 1078 | 922 | 36 | 22 | M20 | 40 | 6 | 1001 | 998 | 90 | 10 | 270 |
010.30.1000 | 1122 | 878 | 100 | 1078 | 922 | 36 | 22 | M20 | 40 | 6 | 1001 | 998 | 90 | 10 | 270 |
010.40.1120 | 1242 | 998 | 100 | 1198 | 1042 | 36 | 22 | M20 | 40 | 6 | 1121 | 1118 | 90 | 10 | 300 |
010.30.1120 | 1242 | 998 | 100 | 1198 | 1042 | 36 | 22 | M20 | 40 | 6 | 1121 | 1118 | 90 | 10 | 300 |
010.45.1250 | 1390 | 1110 | 110 | 1337 | 1163 | 40 | 26 | M24 | 48 | 5 | 1252 | 1248 | 100 | 10 | 420 |
010.35.1250 | 1390 | 1110 | 110 | 1337 | 1163 | 40 | 26 | M24 | 48 | 5 | 1251 | 1248 | 100 | 10 | 420 |
010.45.1400 | 1540 | 1260 | 110 | 1487 | 1313 | 40 | 26 | M24 | 48 | 5 | 1402 | 1398 | 100 | 10 | 480 |
010.35.1400 | 1540 | 1260 | 110 | 1487 | 1313 | 40 | 26 | M24 | 48 | 5 | 1401 | 1398 | 100 | 10 | 480 |
011.45.1600 | 1740 | 1460 | 110 | 1687 | 1513 | 45 | 26 | M24 | 48 | 5 | 1602 | 1598 | 100 | 10 | 550 |
010.35.1600 | 1740 | 1460 | 110 | 1687 | 1513 | 45 | 26 | M24 | 48 | 5 | 1601 | 1598 | 100 | 10 | 550 |
010.45.1800 | 1940 | 1660 | 110 | 1887 | 1713 | 45 | 26 | M24 | 48 | 5 | 1802 | 1798 | 100 | 10 | 610 |
010.35.1800 | 1940 | 1660 | 110 | 1887 | 1713 | 45 | 26 | M24 | 48 | 5 | 1801 | 1798 | 100 | 10 | 610 |
010.60.2000 | 2178 | 1825 | 144 | 2110 | 1891 | 48 | 33 | M30 | 60 | 8 | 2002 | 1998 | 132 | 12 | 1100 |
010.40.2000 | 2178 | 1825 | 144 | 2110 | 1891 | 48 | 33 | M30 | 60 | 8 | 2001 | 1998 | 132 | 12 | 1100 |
010.60.2240 | 2418 | 2065 | 144 | 2350 | 2131 | 48 | 33 | M30 | 60 | 8 | 2242 | 2238 | 132 | 12 | 1250 |
010.40.2240 | 2418 | 2065 | 144 | 2350 | 2131 | 48 | 33 | M30 | 60 | 8 | 2241 | 2238 | 132 | 12 | 1250 |
010.60.2500 | 2678 | 2325 | 144 | 2610 | 2391 | 56 | 33 | M30 | 60 | 8 | 2502 | 2498 | 132 | 12 | 1400 |
010.40.2500 | 2678 | 2325 | 144 | 2610 | 2391 | 56 | 33 | M30 | 60 | 8 | 2501 | 2498 | 132 | 12 | 1400 |
010.60.2800 | 2978 | 2625 | 144 | 2910 | 2691 | 56 | 33 | M30 | 60 | 8 | 2802 | 2798 | 132 | 12 | 1600 |
010.40.2800 | 2978 | 2625 | 144 | 2910 | 2691 | 56 | 33 | M30 | 60 | 8 | 2802 | 2798 | 132 | 12 | 1600 |
010.75.3150 | 3376 | 2922 | 174 | 3286 | 3014 | 56 | 45 | M42 | 84 | 8 | 3152 | 3147 | 162 | 12 | 2800 |
010.50.3150 | 3376 | 2922 | 174 | 3286 | 3014 | 56 | 45 | M42 | 84 | 8 | 3152 | 3147 | 162 | 12 | 2800 |
010.75.3550 | 3776 | 3322 | 174 | 3686 | 3014 | 56 | 45 | M42 | 84 | 8 | 3552 | 3547 | 162 | 12 | 3500 |
010.50.3550 | 3776 | 3322 | 174 | 3686 | 3014 | 56 | 45 | M42 | 84 | 10 | 3552 | 3548 | 162 | 12 | 3500 |
010.75.4000 | 4226 | 3772 | 174 | 4136 | 3864 | 60 | 45 | M42 | 84 | 10 | 4002 | 3997 | 162 | 12 | 4200 |
010.50.4000 | 4226 | 3772 | 174 | 4136 | 3864 | 60 | 45 | M42 | 84 | 10 | 4002 | 3998 | 162 | 12 | 4200 |
010.75.4500 | 4726 | 4272 | 174 | 4636 | 4364 | 60 | 45 | M42 | 84 | 10 | 4502 | 4497 | 162 | 12 | 5100 |
010.50.4500 | 4726 | 4272 | 174 | 4636 | 4364 | 60 | 45 | M42 | 84 | 10 | 4502 | 4498 | 162 | 12 | 5100 |
Feel free to get a quote on the latest price of slewing bearings for any large applications, please include your application, needs, requirements and other details.