The T-40 had a semi-frame layout with a carrier gearbox. The power plant of the tractor was mounted on a semi-frame connected to the gearbox housing. The model was produced in rear-wheel drive and all-wheel drive versions. At the same time, the rear wheels had an increased diameter and a stiffer suspension, the front wheels had a medium-sized diameter and a spring suspension. The high cross-country ability of the tractor was provided by the characteristic herringbone lugs. The ground clearance of the tractor wheels and the track were adjustable; in addition, it was possible to install wheels of a smaller width.
| Applicability | Bearing model | China analog | Bearing type | Size | Quantity |
| Side PTO bearing | 305 | 6305 | Single-row radial ball | 25х62х17 | 1 |
| Side PTO bearing | 309 | 6309 | Single-row radial ball | 45х100х25 | 1 |
| Side PTO bearing | 310 | 6310 | Single-row radial ball | 50х110х27 | 1 |
| Side PTO bearing | 405 | 6405 | Single-row radial ball | 25х80х21 | 1 |
| Bearing on PTO shaft independent synchronous | 211 | 6211 | Single-row radial ball | 55х100х21 | 1 |
| Bearing on PTO shaft independent synchronous | 308 | 6308 | Single-row radial ball | 40х90х23 | 1 |
| Bearing on PTO shaft independent synchronous | 102206 | NF206 | Single row radial roller bearings | 30х62х16 | 2 |
| Bearing on PTO shaft independent synchronous | 102305 | NF305 | Single row radial roller bearings | 25х62х17 | 1 |
| Generator bearing | 180502 | 62202 2RS | Single-row radial ball | 15х35х14 | 1 |
| Generator bearing | 180603 | 62303 2RS | Single-row radial ball | 17х47х19 | 1 |
| Engine bearing KShM | 60204 | 204 Z | Single-row radial ball | 20х47х14 | 1 |
| Compressor bearing | 112 | 6012 | Single-row radial ball | 60х95х18 | 1 |
| Compressor bearing | 60207 | 207 Z | Single-row radial ball | 35х72х17 | 1 |
| Gearbox bearing with differential | 209 | 6209 | Single-row radial ball | 45х85х19 | 1 |
| Gearbox bearing with differential | 212 | 6212 | Single-row radial ball | 60х110х22 | 1 |
| Gearbox bearing with differential | 213 | 6213 | Single-row radial ball | 65х120х23 | 1 |
| Gearbox bearing with differential | 305 | 6305 | Single-row radial ball | 25х62х17 | 1 |
| Gearbox bearing with differential | 406 | 6406 | Single-row radial ball | 30х90х23 | 2 |
| Gearbox bearing with differential | 407 | 6407 | Single-row radial ball | 35х100х25 | 1 |
| Gearbox bearing with differential | 42215 | NJ215 | Cylindrical Roller Bearings | 75х130х25 | 2 |
| Gearbox bearing with differential | 102211 | NF211 | Single row radial roller bearings | 55х100х21 | 1 |
| Gearbox bearing with differential | 102305 | NF305 | Single row radial roller bearings | 25х62х17 | 1 |
| Gearbox bearing with differential | 102309 | NF309 | Single row radial roller bearings | 45х100х25 | 1 |
| Transfer case bearing | 207 | 6207 | Single-row radial ball | 35х72х17 | 1 |
| Transfer case bearing | 305 | 6305 | Single-row radial ball | 25х62х17 | 1 |
| Final drive of the rear axle ball bearing | 315 | 6315 | Single-row radial ball | 75х160х37 | 1 |
| Rear axle final drive roller bearing | 2312 | N312 | Cylindrical Roller Bearings | 60х130х31 | 1 |
| Rear axle final drive roller bearing | 12309 | NF309 | Single row radial roller bearings | 45х100х25 | 4 |
| Front drive axle bearing | 213 | 6213 | Single-row radial ball | 65х120х23 | 2 |
| Front drive axle final drive bearing | 409 | 6409 | Single-row radial ball | 45х120х29 | 1 |
| Front drive axle final drive bearing | 7507 | 32207 | Single row tapered roller | 35х72х24,25 | 4 |
| Front axle suspension bearing | 8115 | 51115 | Single row thrust ball bearing | 75х100х19 | 4 |
| Front axle pivot bearing | 804704 | — | Single row radial needle bearing | 22х35х26,5 | 8 |
| Front axle pinion bearing | 209 | 6209 | Single-row radial ball | 45х85х19 | 1 |
| Front axle pinion bearing | 310 | 6310 | Single-row radial ball | 50х110х27 | 1 |
| Main clutch bearing | 60212 | 6212 Z | Single-row radial ball | 60х110х23 | 1 |
| Main clutch bearing | 64706 | — | Single row radial needle bearing | 29,975х42х44 | 1 |
| Main clutch bearing | 9588213 | — | Single row thrust ball bearing | 35х100х21 | 1 |
| Starting motor bearing | 202 | 6202 | Single-row radial ball | 15х35х11 | 2 |
| Starting motor bearing | 205 | 6205 | Single-row radial ball | 25х52х15 | 2 |
| Starting motor bearing | 42305 | NJ305 | Cylindrical Roller Bearings | 25х62х17 | 1 |
| Starting engine air cleaner bearing | 202 | 6202 | Single-row radial ball | 15х35х11 | 2 |
| Starting motor gearbox bearing | 305 | 6305 | Single-row radial ball | 25х62х17 | 2 |
| Sealed starting motor gearbox bearing | 180502 | 62202 2RS | Single-row radial ball | 15х35х11 | 1 |
| Starting motor gearbox needle bearing | 943/25 | — | Single row radial needle bearing | 25х32х25 | 2 |
| Hydraulic booster bearing RU | 304 | 6304 | Single-row radial ball | 20х52х15 | 1 |
| Hydraulic booster bearing RU | 1207 | 1207 | Self-aligning ball bearing with hole | 35х72х17 | 1 |
| Cooling system bearing | 180504 | 62204 2RS | Single-row radial ball | 20х47х18 | 2 |
| Fuel distribution pump bearing | 25 | 625 | Single-row radial ball | 5х16х5 | 2 |
| Fuel distribution pump bearing | 29 | 629 | Single-row radial ball | 9х26х8 | 1 |
| Fuel distribution pump bearing | 201 | 6201 | Single-row radial ball | 13х32х10 | 1 |
| Fuel distribution pump bearing | 204 | 6204 | Single-row radial ball | 20х47х14 | 1 |
| Fuel distribution pump bearing | 304 | 6304 | Single-row radial ball | 20х52х15 | 1 |
| Fuel distribution pump bearing | 1000095 | 619/5 | Single-row radial ball | 5х13х4 | 1 |
| Fuel distributor pump needle bearing | 942/8 | — | Single row radial needle bearing | 8х14х12 | 2 |
| Clutch bearing | 9588217 | — | Single row thrust ball bearing | 85х124х24,5 | 1 |
| Rear PTO extension bearing | 408 | 6408 | Single-row radial ball | 40х110х27 | 1 |
