Identify the installation by the manufacturer's series and typical dimensions, then check tooth rings and segments, side wear plates, shafts, gearboxes, bearings and confirmed spare-part references.
This guide covers wear parts, drive spares and drawing-based manufacture. MMD Sizer tooth profiles, centre distances, inlet lengths and drives vary with material and project. Before manufacture, confirm the nameplate, full model, serial number, general arrangement and drawing revision.
The table follows MMD's current published series and typical dimensions. Dimensions and weight vary with tooth profile, inlet length, centre-distance arrangement and drive configuration.
| Sizer series | Manufacturer's typical height | Manufacturer's typical width / weight | Identification and application notes |
|---|---|---|---|
| 200 / 350 Series | Overall height 400 mm | Small series; confirm other dimensions for the configuration | Lower throughput and smaller product size |
| 500 Series | Height 615 mm | Width 1870 mm / approximately 12 t | Primary, secondary or tertiary configurations; fixed centres, adjustable centres or single rotor |
| 625 Series | Height 770 mm | Width 2090 mm / approximately 26 t | Typically primary or secondary crushing at medium throughput |
| 750 / 850 Series | Height 1330 mm | Width 2400 mm / approximately 40 t | Higher throughput; primary or secondary duty according to tooth configuration |
| 1000 Series | Height 1590 mm | Width 3020 mm / approximately 60 t | Larger centre distance; often combined with a 750 Series secondary machine |
| 1300 Series | Height 1845 mm | Width 3600 mm / approximately 95 t | High-throughput overburden and large-scale mining materials |
| 1500 Series | Height 2195 mm | Confirm width and weight for the configuration | A large Sizer series currently listed by MMD |
The manufacturer's dimensions and weights are typical values. Manufacture spares to the specific machine's nameplate, serial number, general arrangement and component drawings.
Identify tooth rings and segments, tooth caps, side wear plates, breaker bars, cleaning combs, fasteners and roll shells by position. The cards link to component and material guides.
Tooth Ring / Tooth Segment
Mounted around the crushing shaft, their profile, tooth count, angle and arrangement determine material capture and discharge. Confirm the series, shaft position, segment angle and original drawing.
Material assessment: Available records include ZG30CrMnMo and Mn13Cr2 / ASTM A128 B-2. Confirm the actual material against impact, abrasion and the original drawing.
View the component guide →
Tooth Cap & Retention Assembly
Includes tooth caps and their retention structures. Confirm the mounting section, fastening method, hole pattern and tooth profile; appearance alone does not establish interchangeability.
Material assessment: Confirm heavy-duty tooth caps, fasteners and substrate materials separately against original drawings, impact loads and assembly requirements.
View the component guide →Side Wear Plate / End Plate
Located at the chamber sides and ends to contain material and protect the housing. Confirm profile, hole pattern, thickness and installation clearances against the general arrangement and installed parts.
Material assessment: Select wear plate or cast wear parts according to material abrasiveness, impact severity and the original material specification.
View the component guide →Breaker Bar Cap / Cleaning Comb
Breaker-bar caps help control final product size; cleaning combs clear tooth roots in sticky, wet material. Identify each by machine configuration and installation position.
Material assessment: Existing records specify ZG30CrMnMo for tooth segments and breaker-bar parts. Confirm cleaning-comb material against the original drawing.
View the component guide →
Tooth Segment Bolt & Fastener
Carry alternating impact, clamping and vibration loads. Check threads, head design, strength class, preload and matching washers together.
Material assessment: Manufacture to the original drawing's alloy-steel grade, heat-treatment condition, mechanical properties and surface protection requirements.
View the component guide →Roll Shell / Drum
These load-bearing structures mount tooth segments and transmit torque. Confirm axial length, outside diameter, segment interfaces, keys or splines and dynamic-balance requirements.
Material assessment: Confirm structural material, forging or casting route and heat treatment against the complete drawing and non-destructive testing requirements.
View the component guide →Drive spares are listed separately. Confirm gearboxes, couplings, shafts, bearings, housings and fluid couplings against the complete installed interfaces.
Roll Shaft Assembly
Includes the main shaft, tooth-segment mounting zone, end connections and support interfaces. Confirm the full series, shaft position, rotation direction, general arrangement and shaft-system drawing.
Material assessment: Confirm shaft material, heat treatment, flaw detection, dimensional tolerances and surface quality against the original drawing and loading conditions.
View the component guide →
Bearing & غلاف المحمل
Carry radial and axial loads in the low-speed, high-torque shaft system. Check bearing clearance, housing bore, seals and lubrication connections as a complete assembly.
Material assessment: Confirm bearing models from the IOM and installation records. Follow the original drawing for housing material, machining accuracy and flaw detection.
View the component guide →
Sizer علبة التروس Assembly
A core assembly in the MMD Sizer's low-speed, high-torque drive. Before quoting, confirm gearbox model, ratio, input and output ends, installation orientation and interfaces.
Material assessment: Confirm gear and shaft alloy steel, heat treatment, tooth accuracy and inspection requirements from the original drawing or a traceable sample.
View the component guide →Gear Coupling Assembly
Connect the drive to the shaft system and accommodate limited installation misalignment. Check external-tooth hubs, internal-tooth sleeves, seals and lubrication arrangements together against interface dimensions.
Material assessment: Confirm tooth material, heat treatment and fit accuracy against the original drawing, along with permissible torque and misalignment.
View the component guide →
Fluid Coupling
Provide soft starting and overload protection. Confirm the full coupling model, fluid-fill requirements, input/output interfaces and protective configuration.
Material assessment: Select the assembly by nameplate, interface dimensions and drive parameters, not by visual similarity.
View the component guide →The references below come from MMD IOM manuals, customer installation files and ANRANST production records. They identify only the corresponding model and part position.
| Applicable model | Part | Catalogue reference | Source type |
|---|---|---|---|
| MMD 625 / 154 | Tooth ring / segment, 0° | 5050132-06 | MMD IOM + ANRANST production records |
| MMD 625 / 154 | Tooth ring / segment, 15° | 5050133-06 | MMD IOM + ANRANST production records |
| MMD 625 / 154 | Tooth ring / segment, 30° | 5050134-06 | MMD IOM + ANRANST production records |
| MMD 625 / 154 | Tooth ring / segment, 45° | 5050135-06 | MMD IOM + ANRANST production records |
| MMD 625 / 154 | Tooth ring / segment, 60° | 5050136-06 | MMD IOM + ANRANST production records |
| MMD 625 / 154 | Tooth ring / segment, 75° | 5050137-06 | MMD IOM + ANRANST production records |
| MMD 625 | Standard-length slim housing assembly | 346250424 | MMD IOM |
| MMD 625 | Side wear-plate assembly | 146251943 | MMD IOM |
| MMD 625 | Heavy-duty tooth-cap and retention assembly | 145060084 | MMD IOM |
| MMD 625 | Gear coupling assembly | 111701004 | MMD IOM |
| MMD 625 | MMD R200 30:1 gearbox assembly | 146251966 | MMD IOM |
| MMD 625 | Wheel-carrier assembly | 145040240 | MMD IOM |
| MMD 154 | Spherical roller bearing | 23132 CC C3 W33 | MMD IOM |
| MMD 154 | Oil seal | 175×200×15R4 DIN 3760 | MMD IOM |
Reference-use rules: Use each reference with the full model, shaft position, angle, serial number and drawing revision. A suspected duplicate-reference group was excluded from the public table; unconfirmed references are not published.
No. Confirm shaft position, segment angle, tooth arrangement, fastening method, serial number and drawing revision. The references here help narrow the search.
MMD's current Sizer Range presents 750 / 850 together. Distinguish actual parts by full model and project configuration.
No. Grade is only an initial filter. Also check part position, impact and abrasion conditions, section size, heat treatment, hardness gradient, flaw detection and drawing requirements.
Provide the full model, serial number, shaft position, segment angle, drawing number, installed-part photographs, drawings, material and operating conditions. These support identification, material assessment, manufacturing coordination, quality control and finished-part delivery.
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