描述
970 Nm @ 540 rpm
1,800 Nm Peak Torque
55–80 hp
Star Tube Profile
CE Certified
ISO 9001 / TS16949
MOQ 1 pc — LGPD Ready
S7 PTO Drive Shaft — Operating Torque Parameters
Source: Ever-Power Drive Line S Series Catalog — current series highlighted in orange
| 系列 | Cross mm | Kw @540 | Pk @540 | 540 牛米 | Kw @1000 | Pk @1000 | 牛米@1000 | MP Nm |
|---|---|---|---|---|---|---|---|---|
| S6 | 30.2×92 | 47 | 64 | 830 | 74 | 100 | 710 | 1,450 |
| S7 | 30.2×106.5 | 55 | 75 | 970 | 87 | 118 | 830 | 1,800 |
| S8 | 35×106.5 | 70 | 95 | 1,240 | 110 | 150 | 1,050 | 2,250 |
| S38 | 38×105.6 | 78 | 105 | 1,380 | 123 | 166 | 1,175 | 2,500 |
| S32 | 32×76 | 39 | 53 | 695 | 61 | 83 | 580 | 1,200 |
| S36 | 36×89 | 66 | 90 | 1,175 | 102 | 139 | 975 | 2,000 |
| S9 | 41×108 | 88 | 120 | 1,560 | 140 | 190 | 1,340 | 2,800 |
| S10 | 41×118 | 106 | 145 | 1,905 | 170 | 230 | 1,650 | 3,500 |
| S42 | 42×104.5 | 79 | 107 | 1,400 | 122 | 166 | 1,175 | 2,500 |
Overview
Product Description
S7 steps from the S6 cross kit (30.2×92 mm) to the extended journal S7 cross kit (30.2×106.5 mm). The 14.5 mm journal extension increases the needle roller bearing load distribution area and raises continuous torque from 830 Nm to 970 Nm at 540 rpm. The star tube outer diameter is unchanged — S7 fits all implement housings specified for the S6 star bore profile, and accepts the same yoke types and spline configurations.
The 30.2 mm pin diameter is shared across S6, S7, L5, L6, T5, T6, and T7 — the most widely stocked cross-kit bearing family in the agricultural driveline market. Workshop tooling for 30.2 mm cross-kit removal and installation applies universally to all of these series. However, journal length must be matched to series: the 106.5 mm journal of S7 is different from the 92 mm of S6 and L6, and cross-kit substitution between these is not correct.
For the S Series range comparison and full torque data across all nine S Series models, see the S Series category page. For OEM custom length enquiries, contact Ever-Power Drive Line with implement and hitch dimensions.
Assembly Diagram — Component Reference
Component reference numbers correspond to part codes in the table below
Component Part Numbers — S7
Source: Ever-Power Drive Line S Series Catalog
| Component | Outer / Outboard | Inner / Inboard |
|---|---|---|
| Cross Kit | 7.01 (Ø30.2×106.5 mm) | |
| Joint Simple | s7.01B+s7.01+s7.06 | s7.01B+s7.01+s7.07 |
| Splined Yoke | s7.01B | |
| Tube Yoke | s7.06 | s7.07 |
| Star Tube | s7.03 | s7.04 |
Spline Profile Reference
Left: 1-3/8 inch Z6 (540 rpm) — Right: 1-3/4 inch Z20 (1,000 rpm)
Key Features
Star Tube Profile — Six-Lobe Bore
The star (six-lobe) tube cross-section provides the highest torsional rigidity per unit outer diameter of any standard agricultural PTO tube profile. Specified by European implement OEMs for input housings machined to star bore dimensions — incompatible with triangular or lemon tube profiles.
Sealed Cross-Kit Bearings — IP67
Double-lip sealed needle-roller bearing cups, factory-filled with EP2 lithium complex grease. Grease nipple accessible with shield in place. Rated for 350+ hours between maintenance interventions in standard field conditions.
CE Safety Shield — Standard
CE-marked UV-stabilised HDPE bellows guard matched to S Series tube outer diameter. Spring-clip anchors and chain points at both ends. OECD Code 4 compliant. Included as standard with every S Series unit.
Forged 20CrMnTi Steel Yokes
Drop-forged chromium-manganese-titanium alloy steel yokes, normalised and induction-hardened at bearing seat journals. Designed for sustained peak torque applications in large baler and forage harvester duty cycles.
All Spline Standards Available
1-3/8 inch Z6 (540 rpm), 1-3/4 inch Z20 (1,000 rpm), and 1-3/8 inch Z21 push-pin or bolt-clamp yokes. Both ends specified independently at order.
CE + ISO Certification Package
CE Declaration of Conformity, ISO 9001:2015, TS/16949 process certificate, LGPD compliance documentation. SGS third-party batch inspection available on contract orders.
Typical Applications
S Series star tube — 55–80 hp tractor class applications
High-Output Round Balers — 60–80 hp
S7 handles the 1,800 Nm peak eject torque of large round balers on 65–80 hp tractors. The extended 106.5 mm journal increases load distribution over S6 without changing the tube outer diameter.
Large Rotary Mowers — 60–75 hp
High-blade-count rotary mowers where the implement OEM specifies the extended-journal S7 for improved bearing life under sustained mowing duty cycles at 540 rpm.
Forage Wagon Main Drive
Pick-up reel and auger drive on large forage wagons requiring sustained 700–970 Nm. S7 covers full-load forage wagon operation in dense legume crops on 70–80 hp tractors.
Installation and Maintenance
Attach safety chain to a fixed non-rotating point on both tractor and implement
Confirm Torque Class
Calculate implement demand (Nm). Add 20% safety margin. Select the lowest S Series where Nm@540 (or Nm@1000) exceeds the adjusted figure.
Adjust Working Length
Measure coupling centre distance with implement attached. Verify 50 mm min tube overlap at full extension, 80 mm at full compression.
Engage Yoke Connections
Push-pin yoke: engage at PTO stub and confirm audible click and positive retention. Clamp yoke: torque to manufacturer specification.
Anchor Safety Chains
Connect tractor-side chain to guard or frame; implement-side chain to implement body. Verify taut at working height.
Grease Before First Use
Apply EP2 lithium complex NLGI 2 grease (2–3 pumps) to both cross-kit nipples. Service every 8 hours; 4 hours in wet or abrasive conditions.
Frequently Asked Questions
- —S7 cross kit: 30.2×106.5 mm — S6 cross kit: 30.2×92 mm (14.5 mm longer journal)
- —S7 continuous torque: 970 Nm — S6: 830 Nm at 540 rpm
- —Tube outer diameter is the same — S7 fits all star-bore housings specified for S6
- —Cross kits are not interchangeable — different journal length; order by series code
- —No — T7 uses a 30.2×106.5 mm cross kit, same as S7, but the journal configuration may differ between brands
- —Always order cross kits by series code (S7: 7.01) to ensure the correct part for your shaft assembly
- —The pin diameter (30.2 mm) is the same — workshop tooling is interchangeable
- —S7 is used when the implement peak torque exceeds 1,450 Nm (S6 peak) but the housing accepts only 30.2 mm star tube
- —Large round balers (bale eject peaks), large rotary mowers, and forage wagons typically specify S7
- —If the implement manual specifies S7 or series 7 star tube, do not substitute S6
- —Yes — shear bolt torque limiters are available for S7 star tube splined yoke input
- —Set the release torque below 1,800 Nm (S7 peak) to protect both shaft and implement gearbox
- —Specify limiter position (tractor or implement end) and required release torque at order
- —Standard interval: every 8 operating hours with EP2 lithium complex NLGI 2 grease
- —Reduce to 4 hours in waterlogged soils, high-dust conditions, or sustained high-angle operation
- —Apply 2–3 pump strokes per nipple — both cross-kit joints must be serviced at each interval
Customer Reviews
Ricardo A.
Mato Grosso, Brazil — Agricultural Contractor
★★★★★
- S7 replaced an S6 that was reaching its torque limit during large baler slug loads
- 500 hours in dense soybean straw — cross kits still showing no detectable play
- Star bore fits our baler input housing without any modification
Vera P.
Porto Alegre, Brazil — Farm Equipment Importer
★★★★★
- Stocked S7 alongside T7 after European baler customers specified star tube
- CE and ISO documentation consistent across all shipments
- 8-day lead time from stock — met our harvest-season deadline
Related Products
Shipping and Order Information
MOQ
1 pc (stock)
50 pcs (custom)
Lead Time
7–10 days (stock)
25–30 days (custom)
Shipping
Sea LCL/FCL to Brazil
Air freight available
Trade Terms
FOB Ningbo / Shanghai
CIF Santos available
认证
CE Certified
ISO 9001:2015
TS/16949
SGS InspectionLGPD Compliant
OECD Code 4 Shield
Technical Specifications
| Parameter | @ 540 rpm | @ 1,000 rpm |
|---|---|---|
| Power (Kw) | 55 | 87 |
| Peak Power (Pk) | 75 | 118 |
| Continuous Torque (Nm) | 970 | 830 |
| Peak Torque MP (Nm) | 1,800 | 1,800 |
| Cross Kit | 30.2×106.5 mm | 30.2×106.5 mm |
| HP Range | 55–80 hp | 55–80 hp |
| Tube Profile | Star Tube (6-lobe) | Star Tube (6-lobe) |
| Spline Standard | 1-3/8″ Z6 (std) / 1-3/4″ Z20 | 1-3/8″ Z6 / 1-3/4″ Z20 |
| Bearing Seal | IP67 Double-lip sealed | IP67 Double-lip sealed |
| Grease Spec | EP2 Lithium Complex NLGI 2 | EP2 Lithium Complex NLGI 2 |
| Safety Shield | HDPE CE-certified, UV-stabilised | HDPE CE-certified, UV-stabilised |
| Material | 20CrMnTi alloy steel, forged | 20CrMnTi alloy steel, forged |
MOQ — Minimum Order Quantity
Lead Time
Trade Terms (Incoterms)
Standard terms: EXW | FOB | CIF | DAP
On request: FCA | CFR | CPT | CIP | DDP
DDP is not offered as a default. Available for select destinations on request. “DDP worldwide” is not written on product pages.
Manufacturer & Supplier Information
Request a Quote or Sample
S7 PTO Drive Shaft — Request a Quote or Sample
Send your tractor model, implement type, PTO speed, and required quantity. We confirm series, spline profile, shaft length, lead time, and price within 24 hours. New customers may request 1–5 pcs samples at sample price before committing to full order volume.
