Description
WPWDKT Flange-Mounted Universal Hollow Shaft Worm Gear Reducer — Zero Couplings on Inclined Conveyor & Quarry Equipment with IEC Motor-Direct Convenience
Inclined quarry and aggregate conveyor drives face a compound specification challenge: the gearbox must mount in the inclined position with correct lubrication (inclined housing), engage the drum shaft directly without a coupling (hollow bore), AND allow fast motor replacement without disturbing the drum shaft connection (IEC motor flange). The WPWDKT flange-mounted universal hollow shaft tilted-base worm gear reducer satisfies all three in one purpose-built unit.
Where the WPWKT delivers hollow bore + inclined housing and the WPWDK delivers IEC flange + hollow bore, the WPWDKT adds the IEC motor flange to the WPWKT’s inclined hollow shaft configuration — providing the complete zero-coupling inclined drive specification. Motors 0.12–15 kW, bore 16–110 mm, ratios 1/5–1/60, 5 shaft-direction positions. About Ever-power | Get an Inclined Drive Quote
Technical Specifications
WPWDKT shares specification drawing with WPWDKV. AC = housing width; LL = housing length (inclined); S = hollow bore H7; W×Y = keyway. Motor flange: LA/LB/LC/LE/LZ per IEC 60034-7. Reference speed 1500 r/min. All dimensions in mm.
| Size | Power(kW) | Ratio | AC | B | CC | LL | M | N | E | E₁ | E₂ | G | Z | LA | LB | LC | LE | LZ | Q | U | T×V | S(bore) | W×Y | Wt(kg) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 40 | 0.12 | 1/5–1/60 | 75 | 85 | 40 | 63 | 90 | 187 | 70 | 72 | 97 | 12 | 10 | 115 | 95 | 140 | 4 | M8 | 31 | 11 | 4×12.8 | 16 | 6×18.8 | 5.4 |
| 50 | 0.18 | 83 | 105 | 50 | 70 | 120 | 226 | 95 | 90 | 110 | 14 | 12 | 115 | 95 | 140 | 4 | M8 | 31 | 11 | 4×12.8 | 20 | 6×22.8 | 8.5 | |
| 60 | 0.37 | 91 | 110 | 60 | 80 | 130 | 257 | 105 | 102 | 129 | 15 | 12 | 130 | 110 | 160 | 4 | M8 | 33 | 14 | 5×16.3 | 25 | 8×28.3 | 12 | |
| 70 | 0.37/0.75 | 109/111 | 130 | 70 | 95 | 150 | 305 | 115 | 120 | 155 | 20 | 15 | 130/165 | 110/130 | 160/200 | 4 | M8/M10 | 40/42 | 14/19 | 5×16.3/6×21.8 | 30 | 8×33.3 | 17 | |
| 80 | 0.75/1.5 | 125 | 150 | 80 | 105 | 170 | 350 | 135 | 140 | 180 | 20 | 15 | 165 | 130 | 200 | 4.5 | M10 | 48/52 | 19/24 | 6×21.8/8×27.3 | 35 | 10×38.3 | 26 | |
| 100 | 1.5 | 148 | 160 | 100 | 135 | 190 | 410 | 155 | 165 | 215 | 22 | 15 | 165 | 130 | 200 | 4.5 | M10 | 52 | 24 | 8×27.3 | 40 | 12×43.3 | 40.5 | |
| 120 | 2.2/3.0 | 181 | 175 | 120 | 160 | 230 | 494 | 180 | 195 | 255 | 25 | 18 | 215 | 180 | 250 | 5 | M12 | 63 | 28 | 8×31.3 | 45 | 14×48.8 | 59 | |
| 135 | 3.0/4.0 | 202 | 210 | 135 | 185 | 250 | 559 | 200 | 230 | 285 | 30 | 18 | 215 | 180 | 250 | 5 | M12 | 63 | 28 | 8×31.3 | 60 | 18×64.4 | 89 | |
| 155 | 5.5 | 247 | 256 | 155 | 220 | 275 | 605 | 220 | 250 | 305 | 35 | 21 | 265 | 230 | 300 | 5 | M12 | 83 | 38 | 10×41.3 | 70 | 20×74.9 | 138 | |
| 175 | 5.5/7.5 | 262 | 282 | 175 | 240 | 310 | 675 | 250 | 273 | 348 | 40 | 21 | 265 | 230 | 300 | 5 | M12 | 83 | 38 | 10×41.3 | 80 | 22×85.4 | 172 | |
| 200 | 11.0 | 285 | 320 | 200 | 280 | 360 | 749 | 290 | 305 | 390 | 40 | 24 | 300 | 250 | 350 | 6 | M16 | 114 | 42 | 12×45.3 | 85 | 22×90.4 | 246 | |
| 250 | 11.0/15.0 | 330 | 400 | 250 | 315 | 460 | 920 | 380 | 375 | 475 | 45 | 28 | 300 | 250 | 350 | 6 | M16 | 114 | 42 | 12×45.3 | 110 | 28×116.4 | 400 |
* Shared drawing with WPWDKV. LL = housing length for tilted/inclined configuration. S = hollow bore H7; W×Y = keyway. AC = housing width. 5 shaft-direction positions (A–E). Inclined oil fill documentation supplied.
Product Structure — IEC Flange + Hollow Bore + Inclined Housing
The WPWDKT unites the IEC motor flange (no input coupling) with the WPWKT inclined hollow shaft platform. The motor shaft engages the IEC input bore directly; the drum shaft engages the H7 hollow output bore directly; the inclined housing body (LL dimension, inclined oil ports, five shaft-direction positions) is configured for correct service in tilted and inclined mounting arrangements.
| Motor Input | IEC 60034-7 flange — motor shaft direct, no coupling |
| Output | H7 hollow bore + keyway; 16–110 mm — drum shaft direct, no coupling |
| Configuration | Tilted/inclined housing; elongated LL; 5 shaft positions (A–E) |
| Oil System | Configured for correct gear lubrication at inclined service angle |
| Self-Locking | At ratios ≥1/30 — no rollback, no backstop required |
| Motor Range | 0.12 kW (size 40) to 15 kW (size 250) |
✅ Key Features & Benefits
Complete Zero-Coupling Inclined Conveyor Drive — One Product
The WPWDKT is the only product delivering the complete specification for IEC motor-direct inclined hollow shaft drum drives: no input coupling (IEC flange) + no output coupling (hollow bore) + correct inclined lubrication (inclined housing) + anti-rollback (self-locking at ≥1/30). Previously this required a separate motor adapter, coupling, and backstop. Keywords: IEC flange hollow shaft inclined worm reducer, zero-coupling tilted conveyor worm gearbox.
Rapid Motor Swap Without Drum Shaft Disturbance
The IEC motor flange enables motor replacement at the conveyor head in under 15 minutes without removing or disturbing the hollow bore drum shaft connection. For quarry operations where conveyor downtime is critical, this means a motor failure is resolved in minutes, not hours.
Self-Locking Anti-Rollback — No Separate Backstop
At ratios ≥1/30, the WPWDKT self-locks — preventing inclined conveyor load rollback when the motor is de-energised. The hollow bore ensures the drum shaft is rigidly engaged while self-locking holds. One product eliminates three separate maintenance items: input coupling, output coupling, and backstop.
Inclined Oil System for Motor-Direct Hollow Shaft Service
The inclined oil ports ensure correct gear mesh lubrication in the tilted operating position even with the IEC flange adding motor heat to the housing. The inclined oil fill instruction sheet specifies the correct port and level for the operating angle.
Smooth Hollow Bore Drive for Conveyor Belt Quality
H7 bore precision (≤0.05 mm concentricity) eliminates bore eccentricity as a source of belt vibration — important for inclined conveyor drives where belt tension and speed variations cause belt drift and uneven belt wear if the drive is not smooth.
Full Motor-Direct Range — 0.12 to 15 kW
Twelve size groups accepting 0.12 kW to 15 kW cover all inclined hollow shaft conveyor drive requirements from small aggregate feeder conveyors to large quarry primary conveyor head drives.
Industry Applications
WPWDKT is the purpose-built specification for inclined hollow shaft conveyor and quarry equipment requiring zero-coupling motor-direct input and coupling-free drum shaft output:
Quarry & Aggregate Inclined ConveyorsStone crusher feed inclined conveyor hollow shaft head drives, aggregate elevating belt conveyor motor-direct drives, and quarry processing plant inclined conveyor systems requiring IEC motor-direct hollow bore at inclined angles.
Inclined Industrial Conveyor DrivesInclined factory conveyor hollow shaft drum motor-direct drives, industrial tiered production line inclined conveyor head drives, and heavy manufacturing inclined conveyor systems requiring the complete WPWDKT zero-coupling specification.
Agricultural Inclined Elevator DrivesGrain elevator leg hollow shaft drum IEC motor-direct drives, crop inclined conveyor motor-direct systems, and agricultural material handling inclined elevator head drives.
Building Materials Inclined LinesBrick and block inclined conveyor hollow shaft motor-direct drives, construction materials elevating conveyor head drives, and building materials plant inclined transport system motor-direct drives.
Mining Inclined Transport DrivesSurface mine inclined ore transfer conveyor hollow shaft motor-direct drives and underground mine inclined coal or ore conveyor head drives requiring IEC motor-direct hollow shaft inclined-housing specification.
Waste & Recycling Inclined DrivesWaste sorting inclined conveyor hollow shaft motor-direct head drives, recycling material elevating system IEC motor-direct drives, and composting facility inclined conveyor motor-direct systems.
Quality Control & Certification
ISO 9001:2015 & CE
Full ISO 9001:2015 QMS. CE Declaration of Conformity. IEC flange CMM + bore H7 + inclined oil fill all verified per unit. SGS/BV inspection available for quarry and mining sector procurement documentation.
Three-Check + Run Test
Each WPWDKT: (1) IEC flange CMM (≤0.05 mm TIR); (2) bore H7 plug gauge + concentricity CMM; (3) 45-min run test with inclined-position oil fill confirmed — noise ≤72 dB(A), seal integrity, torque ±5%; (4) inclined oil fill instruction sheet supplied with every unit.
Material Standards
Housing: FC25 cast iron (≥250 MPa). Worm: 20CrMnTi (≥58 HRC). Wheel: ZCuSn10Pb1 tin-bronze. Third-party inspection on request for quarry, aggregate, and mining sector compliance.
Why Choose Ever-power for WPWDKT Gearboxes
We supply WPWDKT zero-coupling inclined hollow shaft worm gearboxes to quarry equipment builders, aggregate processing machinery OEMs, and mining equipment manufacturers in Australia, Poland, India, Canada, and over 60 countries. The IEC flange CMM check, bore H7 verification, and inclined oil fill confirmation — all on every unit — reflect our understanding of quarry operations where component reliability directly affects production continuity.
- ✅ Three-check inspection — flange + bore H7 + inclined oil fill, every unit
- ✅ Inclined oil fill instruction sheet — supplied with every WPWDKT
- ✅ Quarry & aggregate sector expertise — purpose-built for inclined drives
- ✅ Custom bore sizes for non-standard quarry drum shaft diameters
- ✅ 20+ years export record — Australia, Poland, India, Canada and beyond
⭐ Customer Reviews
“We switched our inclined aggregate conveyor head drives to WPWDKT. The difference vs our previous arrangement (motor coupling + standard gearbox + backstop) is significant: installation time reduced by 65%, motor swap time under 15 minutes at the conveyor head, and rollback prevention is passive self-locking — no separate backstop. The IEC flange and hollow bore work exactly as specified at our 28° conveyor angle.”
Craig H., Drive Systems Engineer
Quarry Equipment OEM, Queensland, Australia
“WPWDKT on our inclined stone conveyor hollow shaft head drives. The three-feature specification — IEC motor-direct, hollow bore, inclined housing — addresses our complete inclined drive requirement in one product. Bore dimensions are H7 as specified. The inclined oil fill documentation makes our installation procedure clear. Very satisfied.”
Tomasz W., Drive Engineer
Quarry Equipment OEM, Katowice, Poland
“We use WPWDKT for our aggregate elevating conveyor motor-direct hollow shaft drives. The IEC flange motor mounting and hollow bore drum shaft engagement, both in the correct inclined housing with the oil ports properly positioned for our 22° conveyor angle. Self-locking prevents rollback on stop. Zero coupling maintenance calls in two years of operation.”
Suresh K., Plant Engineer
Aggregate Processing, Maharashtra, India
“WPWDKT for our inclined mine ore conveyor head hollow shaft motor-direct drives. The complete zero-coupling inclined specification is what our mining customers need. Good quality from Ever-power, IEC flange dimensions correct, bore H7 consistent. One custom bore size had a longer lead time than standard — plan ahead for non-standard bores.”
François L., Applications Engineer
Mining Conveyor Manufacturer, British Columbia, Canada
❓ Frequently Asked Questions
What is the difference between WPWDKT and WPWKT?
The WPWKT has a hollow bore in an inclined housing with a standard input shaft (no motor flange). The WPWDKT adds an IEC motor flange at the input — enabling motor-direct operation without an input coupling. Both share the same inclined housing geometry and hollow bore dimensions. Choose WPWKT when a standard input shaft with belt/chain drive is preferred; choose WPWDKT for IEC motor-direct zero-coupling input.
What is the difference between WPWDKT and WPWDKV?
WPWDKT and WPWDKV share the same dimensional specification (shared drawing). WPWDKT is configured for tilted/inclined mounting (conveyor and quarry applications). WPWDKV is configured for vertical flange mounting (pump and agitator top-entry applications). Both have IEC motor flange + hollow bore. Select based on primary installation orientation.
How do I replace the motor on a WPWDKT without removing it from the conveyor structure?
(1) Support the motor weight with a sling or jack. (2) Unbolt the motor from the IEC flange. (3) Withdraw the motor shaft from the IEC bore. (4) Insert the new motor shaft; bolt to IEC flange; tighten to specified torque. The hollow bore output remains engaged on the drum shaft throughout — no drum shaft removal, no drum realignment required.
Does the WPWDKT self-locking prevent rollback on steep inclines with hollow bore engagement?
Yes — at ratios ≥1/30, the WPWDKT self-locks in the inclined position with the hollow bore engaged. The keyway engagement between bore and drum shaft transmits the self-locking torque directly to the drum. For safety-critical inclined applications, use mineral ISO VG 320 oil (not synthetic) to maintain the worm gear friction coefficient required for reliable static self-locking.
What is the maximum conveyor head drum shaft diameter the WPWDKT can accommodate?
The largest standard bore is 110 mm (size 250). For quarry primary conveyor head drums with shaft diameters above 110 mm, custom bore options may be available — contact us with your drum shaft diameter, tolerance, and conveyor inclination for availability confirmation.
Complete Zero-Coupling Inclined Drive — Get WPWDKT Quote
One product eliminates the input coupling, output coupling, and backstop from your inclined conveyor head drive. Our engineers will verify bore, inclined angle, and motor compatibility for your quarry or aggregate application.
